The character designs are sticking out to me. In Sonic Boom, the bandages and such were meant to evoke desert nomads, since the game was originally supposed to involve a big open world with a lot of travel. They were supposed to look like poor, nomadic underdogs. And Eggman’s buttoned-up military officer look was supposed to draw a contrast with them by making him look richer.
This one has Sonic and Tails wearing expensive looking, manufactured first-world stuff. Almost like future Nike gear. And Eggman’s looking pretty blue collar, with his wife beater under an open jacket.