OK, I think I've learned that the reason that I never stick around fandoms is because I usually single out a character or pairing and just read fic about them, ignoring everyone else. And when I run out of any interesting places that those characters can take me, I chuck that fandom and move on to another.
So in order to rediscover my FMA fandom love, rec me FMA fic that is neither Roy/Hughes or Roy/Ed. Slash, gen, het, whatever. Just as long as it doesn't contain any of the mentioned pairings.
I know you can do this, flist. I believe in you.