I've purchased the core set of this game for casual fun, now that the game is finishing Im wondering if someone recommend the best expansions to supplement the core? Since it will just be among friends, I'm not looking for the competitive sets, moreso the ones that will give the most variety.

It seems that most casual players recommend to go for one of the 2 delux expansions with the faction you like. If you buy both then you have a nice setting for every faction. I have bought everything but haven't opened it all yet so I can't speak from my own experience, but I too am playing this casual only and I'm having a blast with a core and the 2 delux. But since this game is dead now you might consider to get everything while you can in case you want more later Just my two cents