HaKatan:
Create a European union type Superstate over the entire county. Then split it into 5 federal states:
1: The Charaidim
2: The religious Zionists (who would still be there)
3: The Arabs
4: The seculars
5: Yerushalaim (as a jointly ruled city, similar to the Clancy plan).
Full population swap, taxation, benefits, laws, security, etc. only from the federal state.