Simple. You create a new sub-role around SCH, and then introduce in a second job into that sub-role that does the same thing better. SE doesn't like openly nerfing jobs, so they usually do it on the sly during expansion transitions when most people tend not to notice. The problem, as you know, is that if they do it to a job that's been a dominant raid pick across a few expansions (i.e. the big three), there's a huge outcry when players of the job are suddenly not the best at everything and the devs end up having to rapidly backpedal and revert most of those nerfs. {Everyone's Grudge}.

But if everyone's busy trying out a new job, there's nobody left to complain. We've seen a couple of successful examples of this already. It ends up being more amicable and better for the community in the long run. I just wish that they would be more open and more frequent with their balance adjustments. Sometimes comps just get stagnant and you need to force a change, regardless of whether feelings are hurt in the process.