I agree with the spirit of your post, however. There *are* people out there making the class work, so if people are having a hard time making it work (including myself) it is because they are not trying hard enough to make a viable team with good people or are just not up to the task.
Actually, every Disc I can think of over 2.4k (maybe even 2.2k?) is running a mongoloid comp built around popping all cooldowns and globalling someone.
I don't think the healer really does much in these comps, but Disc in particular would probably bind every key to Mass Dispel and Dispel, making their fully-cooldowned-opener impossible to peel.