First, here's an idea of how my collection is coming along...
So, I've come up with six dream waves: Magic, Street Level, Celestial, Inhuman, X-Men and Avenger, including some characters that need updates or versions sold outside of exclusive (and expensive) sets.
Amanda Sefton (Daytripper)
Daimon Hellstrom (Son of Satan)
Magik (Illyana Rasputin)
Selene (Hellfire Club's Black Queen)
Build-a-Figure (BAF): Mephisto
Black Widow (a new comic version)
Elektra (a new comic version)
Jamie Madrox (Multiple Man)
BAF: Ghost Rider (with vehicle)
Age of Apocalpyse Kitty Pryde
Kang the Conquerer
Mantis (Guardians of the Galaxy comic version)
There's no way in hell some of these characters will ever be made into figures, but one can dream!