Not sure if this is the right discussion to post this, but as it's quite close, I'll just post it here.
I've been running the LCG now with only one copy of core set and one copy of each chapter pack (except for regugees yet), trying to keep all 4 core decks evenly matched and even building a winter greyjoy on the side. This means you have only one copy of valar and wildfire assault, so the choice of where to include, while still maintaining the balance is a bit of a problem. Since others might face this as well, I'll comment on this a bit.
I've ended up with having valar in targyeren, with recycling attachments, Pentos and rhaegar there to combo with it. Also the Queen's knights and Disgruntled Mercenaries are good with Valar. I even have Westeros Bleeds also in my Targyeren, since the needed influence is otherwise hard to come by. My Stark deck has been more than competetive without a need for any resets, mainly due to having maximized it's killing potential otherwise using icy catapults, events, berserkers with midnight sentries, several copies of Bear Island and of course Robb. Lannister has kept it's original Wildfire Assault due to thematical reasons, I find the idea of Lannisters having some key characters but treating other troops as expendable very nedly. It also seems to balance out very nicely with Stark and Targyeren, since Lanni gets all the best control elements (card draw, gold, kneeling etc.). Having plots with good amounts of gold helps put weenies on the table to be used as cannon fodder.
The problem for me has mostly been with having the Baratheon compete with these other three decks in joust. Targyeren's plentiful resets and Stark's killing power play merry hell with my idea of a fast power rush renown deck (using Fox's Teeth combined with high iniative plots), while Lannister control is quite able to neutralize my most valuable characters and walk around me otherwise.
So the idea of having a reset in all decks sounds good, but is not possible if you want to run all decks with just one core set. The work-around for this would of course be to buy two core sets, but somehow this goes against the idea of the game being LCG (imho). So balancing the decks so that some have resets and some don't seems to be a key issue in such an environment.
If anyone has good ideas for improving the baratheon deck or balancing the decks out better, do tell.
Side-note: I built Greyjoy to be a winter resource denial with lots of good weenies (carrion birds etc.), haven't tested this more than once, so not quite sure if it's up to par with the others. Any ideas for this one are also welcome.