Originally Posted by
exochaft
That's when I find reworks mid-expansion a little rough, when they do happen. It's awesome when you're at the bottom of the barrel, but it sucks when you're brought down to that level.
Be that as it may, there's always too much of a "right" answer when it comes to what you pick (been that way since challenge modes in MoP). For example, as someone mentioned earlier, blood DK's can easily solo many mythic+ bosses w/o a healer where some tanks cannot... that's probably not balanced nor should be tolerated especially if there isn't a tradeoff. Same thing can happen with healers, where the design and toolkit of some classes completely dominates over another healer class. DPSers also have similar issues, especially when designed to have outstanding DPS in varying scenarios with oustanding survival potential and utility at the same time... if you can have the best of all worlds, being a DPSer that's only good at one (or none) is only a detriment.
I'd say the balancing problem comes down to the balance between PvE raiding, PvE mythic+, and PvP. PvP sort of solved it by templates and separate PvP talents, and I wouldn't put it past Blizz to go the template route in mythic+ (I wouldn't want this, but it's an option they have). At this point, as long as Blizz feels every spec of every class fits in somewhere in the content, they're happy. Sucks if you only wish to do one realm of content, though.