I'm having similar issues. I datacenter traveled to help with que times for alliance raids. Seems after the data center travel restriction changes my server had a drastic drop in que times. Last night I was able to que for an alliance raid in about 5-10 minutes but I was sitting in que for about 40 minutes today before i made the decision to transfer. My server is also considered congested now as well even though it's on the newest north American data center. Well I had to afk and the auto logout system did it's thing. Now I can't seem to log back in. I just get an error stating the world is congested and then the game force quits on me. Logged back in again to attempt to return to my own server however I encountered a slightly different but similar error about the server being congested and after about 3 attempts the game force quit on me each time. I can't even log into another character because when I change data centers from the main menu it automatically returns to my character attempting to transfer data centers. I literally can't log in to play right now. I feel it would have been better if they just kept the restrictions they had prior for a while. Only reason I can think on why they changed it is for people to meet up with their static who might be on different data centers, but those people could have easily transferred to a lower population data center to meet up instead unless there were other issues regarding data center travel I'm unaware of.