More Superheroes And Villains

While I am enjoying the Superhero event, I wonder why EA did not expand it to include more heroes and villains?

They could have added:

Grampa as The Rambler
Jasper as Early Bird
Moleman as Iron Lung or Ruler of the Mole People
Lisa as Clobber Girl
Lenny as Poison Lenny
Snake as The Serpent

The more characters you have to play, the more interesting the game becomes.