Hmm... I think it might make the queues fill up with more people, but it would be people who don't like PVP. Polarization due to unequal skill @ dedication towards winning would still exist, so the issue of having a fair chance to win without changing GC would still exist for many.

But the join in progress thing should change for sure, first in last out like it is now is unfair and leads people to keep queueing and withdrawing with no way of knowing if they were close to a queue pop or not.