Ok, but over half of the 240 hostages have been returned via two ceasefire deals and three daring rescue operations. That's a lot of trouble to go through for "sacrificial pawns" when the only intention is "the razing of Gaza" don't you think?
And try to think about it from hamas perspective, why would they ever release all of the hostages, their only source of leverage?
The only possibility has been partial deals, which have happened.