Rules don't have to be super deep as long as the core gameplay loop is fun and the toys and shots are enjoyable, see people still paying big bucks for AFM and MM.
And even if this game is simpler, that's fine too. TNA is super shallow but people love it because it's easy to understand and difficult to master.
But I'm seeing a few different multiballs, some modes specific to each of the upper playfields, and some various Jack-o-Latern modes hinted at. And I like the tease of the wizard mode being something sorta like Alien Invasion on TSPP where you're trying to relock all the balls. It seems to have enough content to keep most players interested. Bowen is somewhere in the rafters to suggest ways to keep the player interested in doing all the different things.