They'd never do that. There's going to be new annual passes with different options and astronomical price points, because they know people WILL pay, as well as new "ticket packages". Some of the ticket packages and VIP/FOTL tickets won't include Potter, and some will offer Potter ala care as an add on, etc. There's gonna be a lot of change.
Which is necessary when you think about our sardine can of a park haha.
I think it's almost guaranteed we'll see a return time ticket system implemented into the land, like is being done in Orlando and even more so in Japan. The return time tickets for the Studio Tour almost seemed like a test as well.