Wow...and here I thought this thread was dead! I'm touched. Well, as for my opinions on Kreia, see all my previous posts in this thread. But I'll say a couple things over: Kreia was evil. She had no value for life, treated everyone around her as pawns, and had a selfish motivation for practically everything she did. And she betrayed the one person whom she claimed to love (the exile, of course).
And about Jedi and Sith: just because you aren't either doesn't make you neutral. Jedi and Sith are beliefs and orders, not a person's character. So while Kreia may not have been aligned with the Sith anymore, I still found her character to be overall darksided.