From what I understand there are still another two characters that will be released, which I believe are Cinder and Fulgore. Still, I will agree that with a healthy roster of people, they should bring back more (Maya, Combo, and Riptor, personally.)

Well, I was fortunate enough to receive two pre order codes (thanks Amazon!). If you are in need of one I will let the first person to reply have it. 

It's touchscreen and rear touch pad only, though you do have the option to turn off the rear pad.