I was attracted to DH this expansion for multiple reasons, Ive been gone for almost 10 years and it is something new for starts, But as you stated, I was attracted to the mobility offered. The speed. the ability to ignore environmental road blocks, and to hopefully be able to track down and finish off fleeing enemies in pvp.
And to your point OP, It is a meme. All of it. The fastest not fast class in the game.
Every class in the game will cripple you with slow effects preventing you from ever touching them while you have almost no way at all to disable or slow down enemy movement. A more fitting title would be " fastest moving non combatant "
and thats just havoc. Vengeance has an entirely other mobility issue.
Yes vengeance can get around pretty good but the allure here is to be able to avoid environmental factors that could prevent you from moving freely.
Such as scaling hills that you could otherwise not walk up, Interact with buildings and other structures to use as anchor points to glide off of. But this only works in theory as the vast majority of all content was not designed with this mechanic in mind and can not be utilized with inferno strike.
Flat surfaces that should act as a clickable target location for inferno strike are not targetable. This is especially noticeable in older content but even new content is busted in this aspect and battle grounds and arena make the skill useless in this regard completely as nothing but a flat eye level surface of the ground infront of you can be targetted, No scaling hills, No hoping on buildings. Nothing.
You can say well that would give VDH a broken advantage in pvp. how so? They do no damage at all. cant even kill other tanks, They have almost no pvp relevant survivability so they are not effective tanks like druid or paladin in pvp, They have no slow and very limited disable so they are constantly out flanked and out ran. and they have ABSOLUTLY NO SLOWS! None. zero. Everyone will lock you down and there is nothing you can do about it.
And don’t get me started on trying to glide while with flag. Reduced to walk speed. slower than even normal run speed without a buff. Useless, It hinders you to even try to glide in the open much less off a hill or anything.
It is all a meme. The DH is the most useless class in the game right now for pvp and only useful as an offtank in raid. Nerfed into oblivion because of a bunch of cry babies I would assume.
I would have loved to seen the Demon hunter back in legion when it was actually good. I came in at the end of S4 BFA so i did not get to experience them before they became reduced to a meme. Feels bad.