I know at least that Michael Madsen and Kevin Corrigan are being considered for Mr. Sinister and Christina Aguilera, Shannyn Sossamon and Linda Cardellini for Dazzler. Jared Padalecki of "Gilmore Girls" fame and Ian Somerhalder are considered for Gambit, cause Taylor Kitsch is busy shooting other films. My uncle and I are huge gambit fans... please don't say my name, even though he is married to my aunt, but still =)
keep up the good work!
-Anonymous