You can't kill Tempus! He is hands down my favorite villain. He is just hysterical and I love to hate him way too much to imagine L&C without him.
As for Lex, I say kill him! Oh, and then, just for fun, bring him back to life just so he can be killed again!
Wow. That sounds incredibly sadistic. Hmm... oh well... I just really, really hate Lex.
~Lauren