This is so tricky at the moment
Most populated servers are Full, and this translate into:
we all want to play with our friends so we go there
Queues will be massive
People will leave to other servers
Other servers get massive queues
Not blaming Blizz but starting with only 2 PVP servers and then only opening 1 more at the time
I do understand that they have to make server get populations so they can open a new one (no Low pop server, but is was badly planed.
Now everyone wants to go to the most populated server, and then all leave, and then again all server will have issues due to server hopping.
All my friends are pending on Queues right now, not knowing where we can play with a good and healthy population and not so long Queue