I still think USH doesn't know what they are going to do after F&F
Like we've seen sooo many rumors but all are for different area's of the park, like reusing Falls Lake, behind SNW, the Mummy and Simpsons.
So at least for me it feel's like they are still talking about what would be best for after the F&F coaster, I think if they want to redo the Mummy area then DK would make sense as it adds more Nintendo and allows the Mummy to be gone but at least we got a new coaster that's mild thrills and as themed (if not more ) then Mummy
But if they want to add some real capacity to the park, going towards Falls lake makes the most sense on the front. Simpsons I hope doesn't get touched until the day they have to mainly because it just doesn't "add" much capacity to the park unless they use the area on the hill under the Simpsons attraction