I think the American Gaza idea is just a negotiation tactic. Trump likes to make outrageous demands as a start to real deal making.
Gaza has potential as a resort, but only if the Muslims are all deported and then Gaza could become a homeland for the region’s minority religions suffering under Islamic intolerance. Gaza will never become a tourist attraction under the Jihadis.
The first order of business is to reduce the number of Hamas terrorists to or near zero. Maybe then the spineless Pals will be able to self govern to the point of coexistance with their neighbors.
The primary reason that Egypt etc don’t want Pals to relocate to their country is that most Pals are fanatics. Remember Arafat? Few more despicable humans have walked this Earth.
I really don’t see Gaza joining the 21st century until the current population is dealt with in one way or another. Then return the Strip to Israel.