On the one hand, it does take a balance of elements to work well. Including the element of subject matter, which helps one become a little more involved in the dealings of the game - After all, if you aren't a fan of Sci-Fi, it could take away from that sort of game.
But I'd argue that FE is very limited in individualizing characters and, as such, force characters into a very limited set or role. It's a much bigger issue in some games or others, but it's counter intuitive to the argument you were once having.