This might be more of an enhancement, but I have setup a good number of unnamed anti grief/place fields and then tried to define new area's within such as.. Food Station or Heal Platform, but all 'touching' fields are renamed at the same time. While I agree that normally that would be correct, if the targeted block is a pstone, it should be able to be named manually without affecting the others.

/ps setname [name] now only sets the name of one field, use with -o flag to set all overlapped fields /ps setname -o [name]. Added to 7.2

I just did: "/ps setname -o My House", while standing inside of 3 fields and it made one of them have the name "-o My House". The other 2 were untouched.