I dunno why this is a bad thing. IMO this is no different than MARIO IN SPACE.
Mario games have always been more about gameplay than anything else. I thought the idea was hokey when I first heard about it, but the game was tons of fun to play and it didn't matter anymore after that.
IIt looks to me like Sonic team is trying their hands at making various types of games and using Sonic as the figurehead. Aside from really shitty controls, none of the sonic games have been that bad. I think it's hilarious Sonic is criticized for Shadow having a part when we have Wario/Waluigi and other pairs like that.
I think it sucks that Sonic's franchise has been on such a supposed decline. He's always been one of the cool heroes for me, but everything they throw him in now is just so lame. I don't know what they could do with him to bring back what made him great in the '90s, but it sure as hell isn't this! Or, I should say, it sure as hell doesn't look like this. The game could still be fun, however much the premise sucks.
People keep expecting the same game over and over, but the bottom line is we're NOT going to get Sonic & Tails again, just as we aren't going to get Super Mario Brothers again.
New Super Mario Bros?