Instead of coming with genious idea like simulteanous logout, why don't you just work at fixing your servers?
It's been a week since the official release of SB, every world is experiencing congestion issue, EVEN the new ones (have someone on Omega telling me they waited 30min), so you know what you can do with your free transfer and chocobo feathers. Before even suggesting the idea of transfering (which is not a choice for many because fc and static), fix your damn servers.
And while we're experiencing your inefficiency at taking real measures, our paid sub keeps running while we enjoy the window of the waiting queue which will get even worst when everyone will get dced and will reconnect at once.