Quoted from Waxx:Greyjoy is a tough one for sure. I have been trying out Lannister to try and blow up Stark/Lannister on Blackwater with multipliers. Is there any interesting strategies with other houses in the new rules? I haven't quite figured out how to play the other houses yet.
Glad you are enjoying my old GOT, I already miss it! Greyjoy is where it's at IMHO, it really slows down the progress for a better challenge. Trying to strategize which houses power you take on when (Martell just before HOTK multiball, for example) makes for what is easily among the top coded games ever (and that is before considering the other houses). Most of the games on the new code were as Greyjoy.
Lannister is probably the best bet for a consistently good score if playing against someone, even though I usually opted for Martell to get the multiball redo because it felt better even if the results weren't as good. Stark is great if you want to blaze through the game or go for Targaryen right away (saving the gimme for the 3rd dragon of course). Baratheon is cool if you can remember to hit the button on the side drains. I don't think I ever took the time to understand the Tyrell and Targaryen rules because I didn't see the advantage of either, probably had only 10-15 plays on each of those houses after the new code.