[lathspell]

Feänor is in my opinion can't be considered evil, though he ain't 'good' either. He caused the kinslaying of Alqualondë. He gainsaid the Valar and he was the one on whom the Doom was laid. But he made the Silmarils, and in that he did good for the light of the trees is still in them.
I think Feänor can be considered TOO good. He was greatest of all elves, that's why he could make the Silmarils, but he became pride and was later overwhelmed by his own greatness and power. And after he left Valinor and went to M-e I don't think he was evil, but secondary to the Silmarils. He was a King among the Elves, but a servant to his own and his property. (hmm... didn't know any other way to write down my opinion, I fid it quite a weird one. I hope it makes sense.)

greetings,
lathspell