I say I know they will because Sonic Team's always changing. It's never consistent.
They can't possibly have weak staffing forever. It has to come to an end sometime.
I mean, the quality of Sonic games have been on the rise, in case you haven't seen (which you have).
And yeah, I agree that it's totally giving them that "spoonfeeding" message crap you always talk about. At the same time, you can't possibly ignore all of the criticism they constantly get. Make a better game, get better reviews and whatnot, and that encourages more people to purchase the game, doesn't it? Buying the games gives them incentive to make more, and if these critics are really changing how the developer makes their games, then there's no reason not to believe that they'll at the very least try something different or effective for the next game.
Heck, just look: Sonic Unleashed comes out. Critics bash on night-time levels, but praise day time. What happens next? You get Sonic Colors, which eliminated the night-time levels, focuses primarily on day-level type gameplay, and even added an element that gave a unique spin on the game itself.
It's not me being overly optimistic at all, in that regard.