Audioslave.
I think Eddie Vedder from Pearl Jam should take over and make AS his side project. That would rock.....maybe.
I just really hate Chris Cornell, he's trying to be this awesome metal singer and just falls short.
Zach de la Rocha for life.
I actually prefer Cornell's voice to Vedder. I never thought Chris was ever trying to be anything other than a powerful voice. He doesn't really strike me as a showman, I mean, the guy's a zombie on stage. And he looks like one, too. :P
I can't really think of anyone who really needs a new singer. I'll get back to you on that one.