My only issue with the instances...

[Elim]

I'm pretty sure they could do something. SWTOR (an extremely underfunded MMO that really shouldn't be considered AAA anymore) has a way to switch instances; there's a drop down menu on their map. I think that or the ability to select instances while teleporting would be awesome.

Having to teleport somewhere else, then fly from the teleport point back into the zone just so you can choose the correct instance does make playing with others a little bit inconvenient.