Would that even be enough to change what's going on? Bibi could always offer some obvious stand-in for himself as a candidate for Prime Minister. (Or just keep running and promise to change the law to re-qualify himself if he wins, since arguably the point of the whole 2019-present political crisis is the immunity law, which Bibi wouldn't want if he weren't Prime Minister.)
The formation of New Hope seemed to offer a, well, new hope to end the crisis by convincing pro-Bibi voters over to the anti-Bibi side, but its total flameout suggests that was never going to happen. If persuasion over the course of repeated elections doesn't work, then the crisis keeps going until Likud chooses, voluntarily, to get rid of Bibi and come up with a different candidate who can convince the Yisrael Beiteinu and New Hope people to rejoin their coalition. That's probably not possible unless/until Bibi actually goes to jail.
(Kind of looking forward to Gantz taking over in November at this point.)
So, if there isn't a new government in place by November, will Gantz become caretaker Prime Minister under the previous rotation agreement? If so, that's both fantastic and hilarious!