Anyone else hope for an expansion pack??

I would love to see more characters, if they made an "expansion pack" which characters would you like to see added? I am more of a DC fan then an mk fan, here are my choices.

Heroes

Hawkman
Hawkgirl
Dr Fate
Red Tornado
The Martian Manhunter
Black Canary
The Ray
The Atom
Green Arrow
Firestorm
Ice
Fire
Aquaman

Villans

Mirror Master
Scarecrow
Solomon Grundy
Sinestro
Poison Ivy
Star Shapphire
Brainiac
Shawdow theif

What do you think?