Since many people didn't like Sonic Battalion, I have found a way to make it less confusing, convoluted, and embarrassing.
Make the title different (title ideas, anyone?)
Don't make all of the characters playable. Make the game focus on the new Team Sonic (Sonic, Tails, Knuckles, Amy, and Katie). The YouTuber JebTube taught me that Sonic games don't all need to have everyone playable. Sonic Adventure 3 was a big event that combined multiple canons, so that needed that many playable characters, but not every game needs this. That takes the fun out of bigger games like Sonic Adventure 3. In that case, the playable characters in this game could be only Sonic, Tails, Knuckles, Amy, and Katie, with every character having their own gameplay style, except Sonic and Katie sharing the running style. but players choosing which one they play as. Sally, Nicole, Rotor, and maybe even Silver, Tangle, Whisper, and the Chaotix could be NPCs that you can talk to and do side quests for. Shadow should be left to his own franchise, except for in very important events like SA3 was.
Don't add the Black Arms or MetaRex - The plot about an alien war really convoluted the story. It can still be an alien invasion, but it should have new aliens. Something original. The MetaRex are like Transformers, but they couldn't transform and they were more lame. The Black Arms are cool, but should be left to Shadow's series.
No unnecessary plot points - Tails and Nicole should not be a couple. I never intended for Knuckles and Katie to be a couple, but it might be interpreted that way by some people, so Sonic does not say "bro, are you flirting with my sister?" to Knuckles. Instead, he could say to someone else "That's very interesting, but I sure don't care."
No beach celebration ending - This ending was intended to make the player feel proud, but it was definitely too cringeworthy. The ending does not need to be very long, but it can still make the player feel proud. There should still be a race between Sonic and Katie, but maybe that could be the only ending. Just a race that Tails, Knuckles, and Amy, as well as the NPCs, watch.
So what do you think? Do you think that would be a better game?
