I want to see the return of the Deadly Six but honestly I want them to improve themselves from the last game. I don't think they truly challenged Sonic like they said they would, leaving those awesome threats they gave empty. I really loved them as characters and its a damn shame they weren't as threatening as they appeared to be. I'm a bit disappointed that most of their character are stereotypes; I was expecting Zeena to be more of a flirty feminine fatale and Zor being sarcastic. I do want to see these characters improve a lot.
I do want to see Sonic be more speedy, without the use of a button obviously but I do want to see him become a fast platformer that has a great story to it. SLW story wise was an improvement in the right direction for the current writers that's for sure.