I mean, if we're talking about "need," what the park most needs is probably that cancelled Main Street Theater with a good show that pulls in thousands of people every hour.
Nothing on that scale is going into the Stitch spot (nor, as I said, is a dark ride).
And also, once TRON opens, MK's two most recent attractions will be coasters.
The park could really use a motion base simulator like Fallon or something. Feels like a big gap in the offerings. But one in each of the theaters with a massive wrap around screen. Boom.