totally with you. i dont really pay attention on how many ppl are in the instance i want to switch to but I dont' think that instanced mapping in this case is really necessary.
This was just to relieve myself because it was getting really annoying during hunts and party. When they remove it because it's not needed I'll be fine with that as well.
If not they really should put a little more mind into it because the current implementation is confusing the least..