Regarding your other issues:
2. Being locked out for a turn is no big deal. Discarding your hand would be a massive change to the rules if you could do it optionally. I would not like this. It makes people digging for answers even more common. I could see a tweak that would say "In the rare circumstance that you cannot declare a house two turns in a row, you may ignore any ability that is 'forcing you to pick a house' and therefore pick any house that you aren't specifically prohibited from picking. In the even more rare circumstance that you are prevented from legally picking each house for a second turn in a row, you are free to pick any house for that turn"

3. Horseman rule - dealing with creatures is built into the game. Way too many options exist.

Regarding your other issues:
2. Being locked out for a turn is no big deal. Discarding your hand would be a massive change to the rules if you could do it optionally. I would not like this. It makes people digging for answers even more common. I could see a tweak that would say "In the rare circumstance that you cannot declare a house two turns in a row, you may ignore any ability that is 'forcing you to pick a house' and therefore pick any house that you aren't specifically prohibited from picking. In the even more rare circumstance that you are prevented from legally picking each house for a second turn in a row, you are free to pick any house for that turn"

3. Horseman rule - dealing with creatures is built into the game. Way too many options exist.

Let's say this is "going off" third turn.
Start with 30 cards in reserve...play 4 in first two turns...and draw 4.
You have 26 in reserve and 4 logos in hand
Play LA
Retrieve LA
Play LA again - draw 1.
You now have 3 logos in hand and 25 in reserve
play 3 - draw 6
Play 2 - draw 4
Play 1 - draw 2
So in the most "tame" version - you have drawn 13 cards, played 6 non LA Logos cards, have a hand of 9, and a reserve of 13.
If you can't find a way to win from that position...your cards are awful.
I am comfortable saying that situation is not good for the game. LA should either be subject to the rule of 6, or shouldn't Stack, or shouldn't go to the discard pile until end of turn.
 

I've always believed that Rule of 6 should apply to everything. This easily solves any infinite loop problem and doesn't change the game in any major way. 

"Poltergeist only destroys an artifact after it has used it. "
That is not true - it will destroy the artifact selected regardless if it was used or not. Official ruling in the Facebook group from the Game Dev

I would say we are still waiting an official answer to the question dperello posted. Whether or not you must choose something that can do more would be a huge change to this game - frankly one that would be a bad decision for simplicity and understanding.

"Poltergeist only destroys an artifact after it has used it. "
That is not true - it will destroy the artifact selected regardless if it was used or not. Official ruling in the Facebook group from the Game Dev

nope - the "current cost" is normally 6. But some things (Grabber Jammer) can modify that.
So you lose 1...and if you have 6 remaining (or whatever is current) you immediately forge a key.
It's REALLY powerful

nope - the "current cost" is normally 6. But some things (Grabber Jammer) can modify that.
So you lose 1...and if you have 6 remaining (or whatever is current) you immediately forge a key.
It's REALLY powerful

Hopefully they will keep the templating to:
"Play: Heal up to 3 damage from a creature. If you healed 3 damage, gain 1[Æ]."
but they also have this:
"Play: Heal 1 damage from each creature. Gain 1[Æ] for each creature healed this way. (Damage is healed by removing that damage from the creature. "Each Creature" includes your opponent's creatures.)"
Clearly their intent is that to be healed means you remove a token...and to be damaged means you have a token. Somehow claiming you are perpetually damaged for 0 doesn't seem to work
 
You need to pick two if possible...if you can only pick one. That creature still takes two damage.
just like with
If you have 0 creatures and your opponent has two...this card sends those two back to their deck.