The intent of the IDF has been apparent to me for some months now, and IMO netanyahu is refusing to stop till the entire strip has been destroyed, which will de facto make it uninhabitable. Let's see how much of Rafah is still standing once the IDF leaves.
When it is all over, IMO the western leaders that were so keen to suck up to netanyahu will wring their hands and claim not to have known what was happening.
As Egypt, quite rightly, is refusing to resettle them, I anticipate that israel will try to get western countries to take them, and when that fails will IMO forcibly remove them to the west bank, where their tame PLO will co operate with israel to suppress them in ghettos.