Jared Kushner drafting it into a so-called agreement, and then going to the Palestinians with a "take it or leave it" so-called offer.

I do civil negotiation and mediation in the courts. That's not how it's done. You have two or more sides making demands and start the new offer and acceptance in phases. Some items are dropped in exchange for gaining some items that are a priority. Either both sides go home feeling dissatisfied for not getting everything demanded (but the controversy is over and settled) or there is no resolution and the matter must be litigated.

Israel had every right to make a list of what it wanted. But so did the Palestinians. From what I understand, the latter was not seriously approached with a good faith interest in consideration of what they wanted.

If a true resolution is wanted for a "peace plan," all parties have to be prepared to give something up.

Unfortunately, both Israel and the Palestinians want the same land.

There are ideas that could have been explored. For example, while an argument can be made that the U.N. doesn't recognize more than Israel control w/o sovereignty on the disputed land, Israel could have offered to purchase the land from the Palestinians (assuming they would be willing to engage in a sale). This is an arbitrary example, but you can see where I'm going with this.

If the Palestinian leadership proposes a plan and it doesn't include a demand for right of return, then they are dead meat. Their own people will reject it. If they include a demand for right of return, then the Israelis will accuse them of not being serious about peace. Committing to a plan of there own is a lose-lose for them.