Classic Goat Mutation, And DLC

Basically my thought/question is related to the Original, what are the chances of some Mutations or Goats (Classy Goat, Dynamite Goat, the swan goat from mass affection, ect) making a return in GS3 because it think it would be cool to see some classics return, second one what kind of DLC stuff would you guys like to see, is there even going to be DLC? who knows,

bonus one is are we able to combine powers with the mutator like in the GOATY