I've been doing this fight pretty much only as MNK lately, but there's really only so much you can do. You're coming across a mix of people who're geared enough to be lazy about it, people too new to know better, and people trying to stick to the old ways (and more than one old way, for that matter). I still see most OTs taking their add(s) to the intersection of the tornadoes, basically directly south of the MT's spot, which leaves the traditional safe spot in the west for healers etc. Whether the rest of the healers etc. take advantage of that safe spot, or whether the other add gets pulled into it, is sort of hit or miss.