I'd take the suggested cards from the one-core lists and double up on the cards that look interesting. Your options are really kind of limited with two cores.

Look at what the decks are trying to do and remove cards that don't help and add cards that do. Or just get as close as you can to three core decklists and fill out the empty slots with cards that look interesting.

So what you're saying is... best Crab ever!

Bruh. It's a role-playing game. Try role-playing. 
I can understand passing because you don't think there's enough content, sure. But it seems your real gripe is no Crab. Try a different Clan. 
I'm Scorpion first. Unicorn when I'm feeling frisky. 
But I'm playing an Ikoma Bard in my current game and it's great. There's something to enjoy in every Clan.
It's like you're proud you've limited your ability to have fun. 

Let me start by saying this is my opinions on the subject.
I have had players handle this in many ways.
First just because you have ranks in kenjutsu doesn't mean you have to carry a katana. Most courtier including the Ikoma Bard come with a wakizashi. Carrying a wakizashi is the sign that you are a Samurai, but doesn't imply that you duel. And most shugenja and courtiers do carry or have their wakizashi when traveling.
The problem with the Ikoma Bard is the fact that they are very lion specific, And their only really combat helpful ability is rank 3 and only works for lion characters, though the GM can always change this to included the party.
The first option is IMHO the most common and requires an experienced players to pull-off. As it is not uncommon for a courtier to have a yojimbo, one option is two make a Bushi character to act as your characters yojimbo. This can be a NPC controlled by the GM most of the time that you take control of during combat, or just a PC that you control along with your courtier.
As a second option you have the Ikoma Lion's Shadow found on page 109 of Emerald empire. This is a hybrid school, that works as both a courtier and a bushi. Its descriptor is Bushi so you may lose some of the courtier freebies, but most of its abilities work for both the battlefield and the courts.
Another option is to really play-up the courtier aspect of your PC, and try to negotiate your way out of most combats. While this can be fun for you, it can cause issues with the more combat oriented members of your party.
Another option is to play a Shugenja as a courtier. This way you have the ability to help in combat and with the right skills can work just fine as a courtier. Remember that a courtier is a job, and the descriptor is just a game mechanic. You don't have to have the courtier descriptor to be able to do the job. You just need the courtier and etiquette skills. Its just that schools with the descriptor sometimes have abilities more geared to it.
Lastly you could sit back and watch during combat. Truth be told you are a courtier not a bushi. If you teammates are expecting you to contribute to combat then they are sorely mistaken. While bard is in the name it has nothing to do with the bards of D&D or other such game. You are the face of the party, they are the meat. When you are negotiating or singing their praises in the courts they get to sit back and do nothing so why do you have to help in combat. I get it you are bored during combat and there is not as much court action as combat in most games.  
That said there are many ways to handle this and probably some I have not even thought of. So it all depends on you as the player. 
 

I can give you a copy of Civ6 and its expansions. I got a copy with Humble Monthly and I will never use it. 

I can give you a copy of Civ6 and its expansions. I got a copy with Humble Monthly and I will never use it. 

FFG doesn't own the idea of an LCG. Heck, AEG only sold L5R to them after AEG initially planned to simply get advice from them on how to convert the CCG to an LCG. Turned out FFG offered a giant check.
Personally, I'd love an anime-themed LCG; I refuse to spend money on any CCG.
Would it? Isn't Weiss Schwarz already doing it?

Good enough to sleep with, but not good enough to marry?

Never trust a Scorpion. But you will never have a more loyal friend than a Scorpion.

The Scorpion's job is a thankless one; they keep the gaze of the other Clans on them, so they do not gaze greedily at the Chrysanthemum Throne instead.

Never trust a Scorpion. But you will never have a more loyal friend than a Scorpion.

The Scorpion's job is a thankless one; they keep the gaze of the other Clans on them, so they do not gaze greedily at the Chrysanthemum Throne instead.

I saw a single core Lion beat a three core Unicorn.

I saw a single core Lion beat a three core Unicorn.

Then annotate the areas that have been updated referring back to the errata. That way you at least know there's something to look at.

Then annotate the areas that have been updated referring back to the errata. That way you at least know there's something to look at.

Then annotate the areas that have been updated referring back to the errata. That way you at least know there's something to look at.

Still not compiled into a single document? The beta book becomes less and less relevant with every update.

By design.

Why aren't these updates being included in the beta book?

Still not compiled into a single document? The beta book becomes less and less relevant with every update.

By design.

Why aren't these updates being included in the beta book?

FFG doesn't own the idea of an LCG. Heck, AEG only sold L5R to them after AEG initially planned to simply get advice from them on how to convert the CCG to an LCG. Turned out FFG offered a giant check.
Personally, I'd love an anime-themed LCG; I refuse to spend money on any CCG.
Would it? Isn't Weiss Schwarz already doing it?

Still not compiled into a single document? The beta book becomes less and less relevant with every update.

By design.

Why aren't these updates being included in the beta book?

This. 100%.
When I heard what had happened I thought it was actually kinda funny. I had zero problem with it. 
Then I read the "justification".
Everything soured. He was trying to save the game? Really? One card was going to break it? You think the game designers are so stupid that it took you to save them from themelves? 
You out Scorpioned the Scorpion. Leave it at that. Simply say you didn't want to see the card used in tournaments. 
But no. You had to save the game. 
Sure. 

This. 100%.
When I heard what had happened I thought it was actually kinda funny. I had zero problem with it. 
Then I read the "justification".
Everything soured. He was trying to save the game? Really? One card was going to break it? You think the game designers are so stupid that it took you to save them from themelves? 
You out Scorpioned the Scorpion. Leave it at that. Simply say you didn't want to see the card used in tournaments. 
But no. You had to save the game. 
Sure. 

Moving the goalposts. I never said they don't make mistakes. If you're going to take issue with something I said, please make sure I actually said it.
The "I'm saving the game" justification made the argument that the card made for a bad play environment. That is, at best, debatable and completely subjective.
And since you mention errata, that is the mechanism by which these issues are dealt with. Not one guy getting on his cross before the card even has the chance to actually do anything.
If you're gonna play the "hero this game needs" role, make sure the thing you're afraid of actually has the impact you think it does. Because for as much as designers and playtesters make mistakes, many cards that look to be game breaking to throngs of internet fanboys (and Backhanded Compliment ain't that) end up being anything but in actual play.

It's going to be just like old times! When Crane did dishonor better than Scorpion and still everyone hated Scorpion anyway.
I'm having Celestial Edition flashbacks.

As a Scorpion player, I feel that way about Dragon. "Oh, you have a bazillion attachments and are now 1000 strength 'roid monsters who don't care I dishonored them?  GG, bro." I may run dishonor, but I still have to win conflicts somehow sometimes, and Banzai isn't always enough.

We still have soft nougaty cores that sometimes just want to be hugged. We're not monsters!