I'm with you on that. I do believe that 22-25 will feature two attractions. I wouldn't rule out the possibility of JP expanding into that area. Also, there is a lack of entertainment on the lower lot, so I would also not rule out the possibility of a show or higher capacity style attraction New York or JP themed.
I've heard from a close source that SLoP will bring 2 big attractions For the 2019 year and constuction for it will happen in the end of the year or early of next year.