You could potentially go prot, major essence conflict and strife, and get the longer lasting Steed movement. And find a piece of Azerite with the CD reduction, too.
I’ve not done this, but it would definitely increase mobility.
Last night, 455 ilvl, cleared 3 sections without running out of sanity. 4th section, mage area, was by far the hardest. But still, only 1 bar.
I was on my DH and I found the last boss/slowed movement to be very easy to work with. You can just fel rush to most packs, vengeful retreat when you get too many stacks/feeling too impatient to stop in place for a few seconds.
When it comes to the boss of the area itself, have your meta ready. Skip right over his insanity lowering ice shards. Vengeful retreat/fel rush combo to easily get across too. Save interrupt for the sheep so you don’t waste any time.
2 bars remaining, I went into every single area from there. Killed the gnome rare (trap him, kill his adds elsewhere if you haven’t figured it out), the sewer sludge. Literally every single mob. Went around looking for potions, shards to turn in (which I forgot to, come to think of it). Then went back to Alleria with 75% of the last one remaining when I couldn’t find anything else to do.
This is not a brag of any kind, I just think it’s incredibly easy after a bit, and am not understanding the struggles…of a fellow DH.
Edit: Just to add, this was my 2nd run after getting the bottom row talent. That is required to speed through it at this pace.
Where did I state I struggled?
Where did I state I cannot complete it?
Why is it if one complains about something, it means they had difficulty?
I think necrotic is a garbage affix, that does not mean I cannot complete keys involving it.
What you feel is or is not worth is not up to you. Particularly given as a DH, the advantages our class possesses in a fight emphasizing mobility.
Monks also have no issue, but other melee classes do primarily because of lead foot.
I didn’t find it to be any harder on my alts either. DK, you can literally shield yourself from the 2 elites in the old town area and avoid chains (or break stun if you fail)/the other guys ticking spell. Also wraith walk to break/go immune to the snares of mage instantly. Pally has freedom to break similarly. Hunter has disengage to break slows exactly as DH does (though with a speed boost at the end + a snare break) as well as feign death as an additional interrupt. Monks roll, though you mentioned them.
Some classes will have disadvantages. Warlock comes to mind. I think compared to most, DH is no better off–was just giving specific techniques I used since I main it.