At least they are gonna use more characters, the problem Sonic has is that it lost so many things that made it great but didn't get anything back, I watched a Pro Jared video about Sonic Adventure 2 Battle recently, and he talked about how we only remember the good parts of it but it was actually really bad as well. However the fact remains there was tons to love in SA2B, high speed, very little bull**** in Sonic and Shadow stages, they never asked you to slow down and jump on platforms, it was about keeping the momentum. It had chao garden, tons of playable characters, 3D stages, multiplayer, and at some point they just decided to toss all that out the window and go with new **** that has not worked out, there is no more 3D stages, every time you think you're playing a 3D stage in a Sonic game it flips to 2D for more than half of the duration, which slows you down and makes the 2D last even longer, they almost never use the other characters as playable characters, when they do it's usually just Sonic, Tails, Knuckles and if we're lucky Amy or Shadow and someone else.
The Chao Garden has never made a true comeback, and the best we got was Sonic Chronicles with Chao as equip items. Speaking of which that was the last Sonic game that didn't make me question why I am still into this game series. Multiplayer hasn't been a thing since 06 when they allowed you to play as a total of 3 characters who were very much on different levels of viability. Most of all though, every single Sonic game that comes out seems to test patience, literally, like it has you actually waiting for stuff. I remember Sonic Colors had a stage on a planet with tons of grass, started out super fun, then all of the sudden you come across a bunch of metal where Eggman is building and it's just a bunch of 2D platform jumping, get on a platform, wait for it to move to the spot you are going to, jump on more platforms to make your way up. It's not to late to improve, it's not hard to even make a good Sonic game, the problem is the people who make the games don't know what made them great.