since the Cabal team now makes a big sum of money from the cash shop, how about investing it into a backup server, so if you need to change hardware on one server you can immediately launch the other server. When you install patches you can install on them on one of the servers before taking down the other. It would minimize the downtime and it would give you a very good name for fixing errors faster than any other mmo-distributor.
Flame it, like it, hate it, love it.
They won't do that, I guess. They would rather just make some more channels to support more players.
Also - the "back-up servers" would stay unused at the time the others would be online. That's another minus. Though it could be made so that about half of the servers are updated before the other half. It would put more pressure on the active servers, but the players could play the game with almost no interruption. This would be a good solution, imo.