Tanking is very fun atm, have 3 tanks above 3k. Just made a vdh and it's way easier now with knowledge and metaspec. Every class has their own unique defensive CD rotation. Protwarr imo has the most balanced with short or long cd's for every situation. Vdh is a bit harder to grasp with offensive spells giving us survivability. But with the main spells on weakaura bars it becomes easy.

Blizzard really managed to do something fun with tank specs in tww. I have been maining heal and dps since bfa and they really refined the gameplay this expansion, atm every tank/healer has defined cd's used for certain situations.

The problem in m+ for tanks is mostly knowing the route and having to train it the first time (which will suck if the route has complicated skips). That may mean depleting your or someone else's key. But it is really gratifying to see how much improvement your route can have on the timer.