[Freakish]

On the matter of Crypt I would go with:
PersonA is camping Duke+Heiro (or whatever combination). They have claim to both mobs as they were there first.
GroupB comes in and tries to rule lawyer PersonA out of there. GroupB should have no say as PersonA is only killing the parts of the camp that he wants. GroupB can have any of the spawns PersonA allows them but needs to leave PersonA mobs alone.

In this situation GroupB is being a drain on society. They have no right to any of the mobs save for what PersonA allows.

Another situation: If you are currently clearing to a camp (say King in sebilis, so as not to confuse this with the Crypt issue) and a group jumps you as you're pulling mobs to get into camp position, you should have no claim over the group you just jumped. You would have had to kill the same monsters to get to the camp, you might have gotten to the single cash spawn first simply by running past the cleared area but you were not in the process of clearing the camp.