Not sure why people have this problem. The only drops that are worth wearing are blue or purple. Green drops are almost always worse than quest rewards, and for quest rewards all 4 of your shamans will be wearing the same things most likely anyway.

For the blue/purple drops in instances, it only takes a second to see who needs it, and with 4 shamans you should really know before you even look at them (most likely they'll all need it, or you'll know who already has that piece off the top of your head anyway).

I've never had to inspect more than 1 shaman to determine if I need a drop, and pre-80 I never had to inspect any because I only really used quest rewards anyway. I don't use ML because its a waste of time, I just set FFA and loot EVERYTHING on my main unless its a BoP item which I'll usually loot on my enchanter to DE it, or another shaman if I know one of them needs to wear it, but 99% of the time I never have to switch windows because I loot everything on my main.

Also, by sparkling only on green/blue drops you're passing up mats and craploads of grey drops that sell for a small fortune. I'd say every instance run I pick up at least 30-50g worth of greys, probably twice that much.