The X-Men franchise has proven that Hollywood can actually respect the source material when it comes to some much-beloved Marvel comics, and I have long hoped they would never touch my favorites besides the X-Men, The Inhumans. But I've had a change of heart and think maybe it's time. They are really better as ancillary characters - they seem more mysterious. Most important is that a director who specializes in moody atmospherics be chosen to realize them onscreen - their representation on film should be surreal.
I'm not so excited about the upcoming Avengers movie, since it has none of the characters I would put in the lineup: Vision, Quicksilver, Wanda the Scarlet Witch, Dr. Strange, Nova and Black Panther.