The GC Restriction is one of my favorite parts, you keep worrying about teaming up with your friends as opposed to queueing up at the same time and hope you end up locked in battle with each other fighting for your respective GC. I'm a proud Immortal Flames and I have a blast trying to take out my friends in PvP, if you let just anyone in there then there is no teams also the amount of pre-mades rolling everyone would skyrocket and you'd quit after losing 50 in a row because you single queue.