I am not sure where the issue is... Maintenance times for all servers has been the same since the game launched... Nothing has changed.. When the APAC servers were there, guess what?? Maintenance was at the exact same time it is on every other server.. Now that the APAC servers are gone, guess what?? Maintenance is at the exact same time it is on every other server.
I've been raiding since just after release in this game and maintenance has never been an issue because it was always on the scheduled maintenance day (Tuesday). Because of this we raided Wed/Thur/Sun. Too easy!
BUT... Over the last month there has been maintenance almost every Wednesday and a few Thursdays. Since it falls right in the middle of our peak raiding time these unscheduled patches (even if it's only 2 hours) wipe out an entire day of raiding for us. That's the issue.