[denmasterprime]

Ones I suspect will never be made included. No particular order.

Magik - armor, horns, hooves
Abomination - more large scale baddies
Black Cat - seems popular with most everyone
Cannonball - NOT A LIEFIELD VERSION!!
Vulture - like he was in shattered dimensions...creepy, cannibalistic
Box - red & silver all the way
Spiral - there's a challenge for you Hasbro designers. Make 6 indepedantly articulated arms! Dare you!
Bishop - full on mullet greatness
** and never get made but Marvel bought the company **
Prime and Lord Pumpkin! C'mon! Translucent dark green flames in and around a pumpkin head? Winner all the way.

Just my 2 cents.