As I've sat here for half an hour being declined by every m+ group even though I have more than enough experience, I find myself thinking about warriors. I've only played one since cata but in my personal view, and it might be very wrong, that warrs are never great. If memory serves me well, they're usually not bad, but have they ever been a class you actually want to see? We bring nothing of real value that other classes bring.
While I'm ranting about warrs, it also seems like other classes, those that always seem to be good, locks and rogues etc, are always allowed to stay at the top, and whenever warriors look like they might be worth considering, Blizzard descends on them because no fun is allowed.