Once they have a state, the Arabs in Gaza and the West Bank will finally have defined borders and a single sovereign. And history shows they can be relied upon to launch another genocidal war on Israel more or less immediately.
Then it will be a war between two nation-states, not a nation-state vs. an unaccountable terrorist organization that pretends to be a proper state when convenient.
The Israel vs. Palestine conflict will then fall neatly into the framework of Westphalian nation-states and when Israel proceeds to utterly defeat Palestine, demands their unconditional surrender, kills all who resist, annexes their territory, and forcibly re-educates any who remain (post-WWII style), it will all be 100% kosher according to customary international law.