Seconded. Personally, I think all the corpses should either potentially rise as zombies, or have some kind of reason why they won’t (that I’m capable of finding out in-game). If there’s a corpse that’s not coming back because it’s obviously destroyed, that’s to be expected. On the other hand, if there’s a mostly intact scientist corpse with obvious bite wounds, which is old enough to start rotting but is clearly not turning, that’s a clue, and I would very much like the opportunity to investigate it.