Since I play healers and tanks, df queues are not a concern to me.

Since I transferred off Balmung, logging queues are not a concern to me.

What concerns me is that if this is ever done during start of peak time for a timezone, say 5pm Eastern, then there is going to mostly likely be a large influx of people trying to log in at once. Last time this happen, since ALL servers will be basically "restarted", the login server for the data center is going to be hit by people logging in by not 1 or 2 servers worth, but everyone on that data center.

If past history is a good indication since SE did not upgrade the login servers, they will most likely crash. That is the part that is very concerning to me.