Wait queues to get on servers
Well as you know the 7 day extension was for players messing around in WvW and botters using it to farm ori on all servers so they made people wait 7 days instead, sorted both problems. I fully agree with a queue, I left my server to help someone out and after the 7 days, it was still another 3-4 days before a spot opened up on my server again, that was checking every few hours also, a queue would really help.
It you do dungeons with your friends you do not have to be on the same server you know, just be in the same party; you cannot WvW or do general PvE with them though I am afraid but at least you can dungeon together while waiting. This can be helpful for when you all want to do CoF and it is locked on their server because it might be open on your server and you can start the dungeon for all