At this point I think it's pretty clear: they have to bring insomeone with new ideas and let him/them set a solid foundation for the next games.
Kinda like what microsoft did with killer instinct. They realized they didnt have the competence to make a fighting game, so they asked a bunch of 3rd party teams to make a pitch for a new game. Except in this case, make it open to everybody, fans included, because as showed by sonic mania and other fan projects, the sonic community is oozing with talent. Also if and once youve find the right people, dont let them slip away and get either hired or bought by someone else, like microsoft did instead.
And another important thing: kill modern sonic for good and make classic sonic the defacto standard again. the whole concept of modern sonic is stupid. You dont see nintendo making distinctions between old and new mario.
Also The older I get, the less I cant stand that fucking idiot "kum on step it up, youre too slow!"
Fuck off. Sonic is at its best when he is a silent little guy, that gets shit done and fights against all odds and versus things that are bigger and more powerful than him. He can speak, but keep it under control.