reality is that there isn't really any reason to multibox raids anymore, maybe my server is a special snowflake but there are dozens of pugs that 1-shot clear every week toc10/25 without issues. Whenever I'm bored I login to wow and I can find a toc/ony/voa25 pug within a few minutes and be done and out. Blizzard has indicated they are very happy with this model of normal raids being fairly easy, and heroic mode being for raid guilds and will continue it in ICC. I haven't stepped foot in naxx or ulduar in 2+ months and don't miss them at all.

I still activate my 5-box for stuff like brewfest and hallowed eve (and ZG, sethekk halls, etc), but its mostly just so I can do 5 mans by myself and get any mounts/pets/etc that drop. In fact if anything I view raids as simply an easy way to gear up my chars solo, so I can clear 5 mans even faster when boxing. Nothing stomps oculus or hos faster than 5 guys in full 232/245 gear