Actually, they are just reducing it to 12 targets. If someone had such a macro (would be pretty difficult to make, but perhaps possible), they could easily make it only pull 12 targets. The hard part is the kiting part -- if someone figured out a good way to do this then this would be a very useful macro.... (I think you could do it with /circle and /face with a wiz. With a mage it would be harder because there is a cast time to the beam)