I can't say for sure what needs to be done. I know here are some absolutes:

1. It is too small a place for everyone who wants to live there. There need to be auxilliary settlements in other countries, including the U.S., various other mid-East countries, perhaps South America and elsewhere, and some fo the population pressure needs to be reduced.
2. They shouldn't be calling for new settlers in Israel when the Palestinians don't have enough.
3.   if they own land in whatever is Israel now, they need to retain title and have some rights.
4. Water rights need to be vigorously protected.
5. Settlements must go.
6. Encroachment must go.
7. Orchards and farmlands must be preserved.
8. That is all for now. If nothing else, they need a Williamsburg type area that is preserved and at least they can visit and see what their homeland was like before it was taken from them, or given away by politicians.
9. There need to be work programs..like maybe they could make the eyeglasses for the world...
10. They should be able to travel as agricultural workers under special programs. They should be trained in vocational schools int he trades and in agriculture. Wine-makign comes to mind...

Various other considerations.