It would indeed just be a QOL change. Because of how easily it can be circumvented, it wouldn't be particularly important, but that can be said about many QOL things.

I am surprised though that no one has mentioned the one time the whole partying thing really blows though. People who are suffering long DPS (or pvp) queues might be going out and doing fates/hunts while waiting and therefore cannot join/change parties unless they want to lose their spot in the queue.

Still would just be a QOL change, as most such players accept that their credit will be minimized and just want to do something while they wait, but I'm sure they wouldn't mind if it was changed to let them have a better shot.