At this point a forced migration might be the option with the least bloodshed, as repulsive as it is. Then you run into the problem though that Palestinians are still shunned by the Arab world because being them being Muslim isn't enough to override antisemitism from their nationality.

Ironically I think we might need another mandated "this region is now the home of Palestinians" like with Israel if they're going to have a peaceful place to live.

For the record I don't like any of these solutions. But like you said we're quickly approaching the point where Israel may permanently end the conflict through the genocide of the Palestinians, and that's the absolutely least desirable outcome.