Continuing with the idea of Capital E Evil, I even think the idea of "evil gods" could be excised from D&D.
Correct me if I'm wrong, but historically in polytheistic mythology (such as Ancient Greece and Ancient Egypt), there aren't really "evil" gods. There are gods in conflict, and trickster gods, and gods of war, but as far as I know there wasn't an Ancient Greek God of Evil.
Eris was pretty bad; she might fall under the "trickster" category, although she's much less nice than even Loki.
Her children and most of her siblings though - yeah, they're pretty much flat out evil, being the personifications of all the woes of humanity: Lies and Murders and Pains and Lawlessness and so on...