I think you're reading too much into it radrappy. From what we've seen, the game plays great and has more than enough references and shoutouts to appeal to any video game player. Casuals will surly enjoy Green Hill, as it is a very recognizable stage, and characters like Tails and Knuckles are very identifiable thanks to heavy marketing throughout the '90's and early '00's. Fans of the early games have their Sonic and stages, fans of modern will have their Sonic and stages, fans of everything have... everything. Really, there are so many different aspects to the game that it will be impossible for somebody to hate the whole thing. Think of this as the TURTLES FOREVER of the Sonic franchise.
As for new players, like Sharky said, kid's have much lower standards and they are Sonic's target demo. Thankfully, this game targets both kids and longtime fans AND Sonic Team seems to be giving a damn and are producing a great looking and playing title. This ain't no '06.
Also, sad to say, but if the thing has "SONIC" on the box, it's a guaranteed sale for any parent who lets their kids play Sonic games. If little Timmy played Free Riders, Colors, 4 or SASAR last year then I'm pretty sure either mommy will get Timmy the game for the holidays or Timmy will ask for it. Timmy just wants Sonic, he doesn't really care about Fang cameos or City Escape remixes.
Also, I wouldn't assume every living person considers city escape's theme to be alienating and awful. You just seem to hate it a whole lot. From the footage of Sonic Boom, it seemed most everyone was singing along. The thing is kitschy, like a lot of the music found in late '90's/early '00's SEGA games. Kitsch sells.
Why can't we be Pixar?
I really don't get that comparison. Sonic games aren't about high level storytelling or deep characters, so by your examples Sonic has always been more akin to Dreamworks. Then again, Sonic is not Dreamworks. Sonic is SEGA, and SEGA is about a lot of things.
You mean visuals? Because Sonic Team have done an amazing job in that department in Unleashed and this game (and Colors, despite the Wii's drawbacks). So in that regard, Sonic is more like Pixar.
Do you mean Sonic Team sacrifices their dignity by appealing to fans by bringing back old levels and music? Because that is damn awesome, I see no dignity lost there.
Personally, I don't see how the Pixar/Dreamworks stuff can even compare to Sonic games.