At some point the Israelis have to consider some constitutional reform to end this madness, don't they?
Whether it's increasing their seat thresholds or adding a seat bonus for the winning like in Greece, something has to be fixed if Israelis want an actual functioning government.
That would just reinforce the religious right which would in turn reinforce apartheid 2.0. The only way constitutional reform could work out without destroying liberal democracy in Israel is by adopting a secular, one-state solution. Either keep things as they are or give the Palestinians the vote.