I have a theory that people who are against or indifferent towards this Sonic news are under 20 years old. But for old timers like me, we have been waiting for something like this since 1991. (don't bring us down)
I am under 20 years old but as I said earlier in this topic, I actually grew up with Sonic, watched the Sonic cartoons, read Sonic comics and all that. I don't think I'm old timer but if I was over 20 hell yeah I would be one, but right now I am a hardcore guy (using Jester's definition of hardcore of course).
I liked Sonic back when he first came out, but after all the recent games, not so much. I especially don't like his voice and "attitude".
I liked the SA games, the GBA games and the Rush ones. Heroes was meh, Shadow was garbage and Sonic 2006 (the one released for PS3 and 360) was total shit. Secret Rings is pretty good IMO. His voice, I think, is actually what fits his character and attitude. And speaking of attitude, he always had one from way back in '91, he just didn't have a voice to accompany it. Hence that idle animation of his where he grows impatient and looks at the player and then telling them to go forward by pointing his fingers.
Also idk man but there are still a lot of stages, tracks, items, Assists and Pokemons to cover, maybe even characters. I guess they delayed the game for that reason, to show us the rest of the stuff, but I think they are also fine tuning aspects of it. You never know.
On the context of AC characters, in that link I posted (I sure talk about that link a lot) Sakurai himself mentioned that he wouldn't find it interesting and fitting to see AC characters fighting (actually he said Tom Nook but I guess he doesn't like the idea of other AC characters fighting as well).