Can there be a stable-for-Israel government out of this election that does not contain both Likud and Labor? Looking at the numbers, I'm having trouble coming up with a Likud government with over 66ish seats, and a government with 61-65 seats is implausible.
Likud can't invite in the Arabs or the fascists, Meretz won't join, and he can have either the Haredi parties or Yesh Atid but not both. There's no obvious Likud coalition that isn't a grand coalition with Labor plus Kulanu, the Haredi, and Jewish Home and maybe Lieberman.
Likud will happily invite Yachad, though they may go through the motions of asking Marzel personally to stay out. And, in any case, you only need 61 - nothing at all implausible about that. The only objection is that Netanyahu likes being in the center of his cabinet, while in this case he will be pretty far to the left. But, frankly, hard for me to see the argument he can make to have any Labor leader to accept being second fiddle to him. The grand coalition would have to, at least, involve alternation, and it is hard to see why would Netanyahu prefer that to having a smaller coalition.
Should it be in the other thread, though?