@Mademan: Did you play the first game at all? Just curious.
Also, I wouldn't expect you to buy a game just because it's a SEGA game. But I'd have thought you'd give a SEGA game a chance, especially when so many forum members enjoyed it and it has fanservice to boot. Maybe SASRT will change your mind when they reveal more of the tracks and characters.
@SegaUranus who isn't actually posting here but is on twitter: Seems the game having a "kiddy" vibe makes it not feel like a SEGA game. Wait, what? I point to Samba de Amigo, Virtua Fighter: Kids, any Sonic game, Puyo Puyo, Alex Kidd, Fantasy Zone and Chu Chu Rocket. All bright and cheery games, all kiddy and all from SEGA. How is All-Stars different from any of those?