Well, it came unexpected with all the pre set traps - otherwise yeah, it shouldnt be an issue. The biggest issue we have is with multiboxers staying around somewhere ready to rezz and 5x "Now i am become death, destroyer of worlds" you, along with all other individuals trying to dispel and so on. And while this can be countered for BWL, its gonna be really annoying with AQ and Naxx. If there were five people on one char each willing to coordinate like this, id be like: Impressive, you gathered up, planned and executed it - well played. The multiboxers have nothing to loose, they die and ress, while the raid groups spent time and money to prepare.
At this point of the game ill have to spend more time on planning a secure route into the raid instances, than to organise my raid itself.