It's more than 4. I'm not a huge fan, but it's clearly the intended way to play this game. Goro, Kano, Khameleon, Jax(kinda), Lao, Sonya, Motaro, Mavado can even do it with defensive Trap use.
A sad but honest thought is that NRS has always catered to casuals, this MK is scrubby on purpose. I mean, no interesting single player mode to keep casuals around and the most degenerate gameplay of the NRS Era is certainly ripe for a conspiracy theory. They're gonna let it ride as far as HOW the Kameos work. Maybe cooldowns will get changed or something that just makes the game less fun but keeps it the same in theory.
Tournament was solid, happy to see the time of unbeatable Sonicfox end but is it him finally getting competition or is it a game that has a very close ceiling and floor?