On the topic of female heroes… if FFG decides to eventually break out of their set timeframe and include "historical" charactcers, Luthien obvously becomes an amazing possibility! You could possibly even work something out of Nienor Niniel or Morwen (although probably better as allies… or horribly doomed heroes…).
Taking that idea of non-male heroes out a bit farther, it will be interesting to see if they aver develop a non-humanoid hero… I know that a lot of us had hoped for Gwahir as a hero, and now that they have Beorn in the game, it'd be cool to see some form of "bear-specific" cards that cued off of him (like a "stance" card or something)… But even more than those two, I would get all school-girly if they ever had a Huan hero card…. hell, I'd take ANY version of Huan they put in this game! One of my favorite Middle-Earth "characters"…