Israel has been for a very long time been receptive to Pakistani outreach. During the time of Musharraf there were some discreet meetings but nothing could move forward as Musharraf's relation with Islamists was already strained and he did not want to annoy them further.
Israel has been sizing up Pak for a very long time. Pak Army in Gaza is of in a limited sense useful. Look at it like a Trump Militia only an Islamic one. Which can do street patrols, conduct sweeps and keep the low level policing done. if you look at the history of the conflict, a lot of fireballs errupted because a simple street situation went out of hand. A pliant Islamic force (even corrupted and likely to get into bed with Hamas) will still have limited value and it will free up Israeli units from a very hostile and volatile zone.
Risk Reduced
Beyond that, any credible input and Israel will take rapid action. With or without Pak.
Bragging about their prowess in a village near Faisalabad is one thing. Standing up to a trigger happy and combat hardened force 3000 KM from your home bases is another.
I agree with @anonymous on the part that the CF won’t hold. I believe the americans know this as well, and they are just doing Netanyahu’s bidding (same way that Israel got US to bomb Iran quite recently). The only problem with Pak peace keepers is that they have jihadi mindset - so can Israel guarantee that Pak won’t play some double game there - with/without the blessing of Pak military leadership? I don’t think that’s a risk Israel will take. Pakistanis see Israelis as enemy, and we know how the average Pakistani brains work!
As far as prep for multi-front conflict goes, yes, this exercise is probably to ensure that China doesn’t intervene (dissuade them by show of force) when Op against Pak resumes.



