The only "sad" thing about Sonic Superstars to me is that it means that the foreseeable future for the series is "Modern = 3D, Classic = 2D" and that's only "sad" because I personally grew up with the Advance and Rush games and I loved what they brought to the table.
And even then the addition of the "Emerald powers" says to me that they're willing to build new things on top of the mechanics of the Genesis games, compared to Mania which mostly slipped new things into those mechanics, if that makes sense. Mania is amazing and it made the right decision in largely just slipping a few new abilities (drop dash, Ray and Mighty's unique moves) into the framework of Sonic 3 & Knuckles, but it's not a future-proof direction compared to what Superstars is doing, IMO.
Basically what I'm saying is I'm really looking forward to this game :)
