No matter how good your guild is (I used to raid lead the top guild on the server), there are at least a few people in the raid who have absolutely no clue what to do. They either don't use boss mods, or are too distracted to look at them. So they never have any idea what abilities the boss is going to use and when.

I've found that when I talk everyone through the fight on vent, as it's happening. "Whirlwind in 3, back off...okay come back in", etc, the run is an order of magnitude more successful. I've actually done experiments where on some nights I talk them through, on others I don't. The nights where I walk the clueless ones through are unbelievably more successful.

Raiding is a lot more about the strat than the ability to press buttons. So I'm effectively playing their characters for them. Multiboxing is exactly like leading a raid, except that my group has 100% attendance, and there is no drama