Looks like whoever wrote the Yahoo! Games blog thinks Sega needs to give Sonic a rest... http://games.yahoo.com/blogs/plugged-in ... 37661.html
"Sonic the Hedgehog
People have been calling for Sonic's head for nearly a decade now, and for good reason: the blue blur just ain't what he used to be.
Beginning with 2003's Sonic Heroes (or thereabouts), a string of pretty lousy games started gnawing away on the mascot's legacy. 2006's Sonic the Hedgehog was a disaster, as was 2008's Sonic Unleashed. If you typed "which game franchises should die" into a search engine in 2009, Sonic's was the first name on every list.
To be fair, though, he's made a decent comeback of late. Sonic Colors for the Wii was a solid platformer, as was the recently released throwback game, Sonic Generations. But despite these modest gains, it's time for the hedgehog to go on administrative leave. He's been running non-stop for over 20 years now. Give him — and us -- a break, Sega."
I agree about the 2006 Sonic the Hedgehog game and, to some extent, Sonic Heroes as well. But I think Sega has started to repair the damage caused by those games, by releasing Sonic Colors and Sonic Generations. As long as Sega keeps the quality up then I see no reason for that to be necessary.