Every time people lament changes to the lore that amount to "not every member of species X is irredeemably evil" and claim the game is removing villains from it, I think how villains of so-caleld evil species fall into two cathegories: a) bland and boring and b)have something else, unrelated to their species going on for them, that makes them interesting.
If you like this idea, you should read the webcomic The Order of the Stick. It's surprisingly good for a comic that started out as DND jokes and stick figures. It deals a lot with the problem of evil in DND.
Likewise, Goblins.