You see this in a lot of games...a class/build/template/whatever will get to the top of the perceived heap in terms of power (regardless of whether it is actually any more powerful than whatever else, what matters is perception), lots of people start playing it, those who don't want to/won't/can't play it complain, and come next expansion, there are a million little things designed to thin the herd of players of said class/build/template/whatever. Tamers had probably reached the peak of their power just before SA, and now they're on the downswing. Something else will rise, then fall. Etc. I like my tamer, and I'm not nuts about shelving him (and probably won't), but the writing's definitely on the wall, as far as I can tell.