I'm a contrarian. Let Hamas form the government. Fatah is so weak Abbas can never make a deal on any acceptable terms; Hamas wouldn't allow it. Fatah can't or won't disarm Hamas. So, we have to deal with Hamas in any event, if a deal can be made. Bring them out in the open and make them spell out their terms or make it clear to the Western elites and their own people that they will never make peace. Make them responsible for economic development and picking up the garbage. See if they really are incorruptible. If they don't measure up, and I doubt they will, their popularity will plummet.
If they refuse to make peace, finish the wall. Israel would be in no worse position than it is now. And if that's how things work out; yes, indeed, Mrs. Abu Zneid, welcome to Hell.