You're probably going to think I'm crazy.. but you seriously need to try dropping Voodo for Locust Swarm with Devouring Swarm rune. The amount of enemies means ridiculous regen + the damage increase will actually surprise you quite a bit. Also, dots + lifesteal weapon like you're running means constant heals.
Edit: Also, I prefer using Blood Ritual over Attunement, but I could be wrong on that.
I've been doing these runs the last few days. Taking how much exp a run is't good for this run because its so short and exp is a bit erratic. However I've done a few 30mins run (stop watch) and I almost always get around 40-44mil, so about 80 to 88mil an hour.
I tried going down to mp9, Only did on 30 min run but got 37mil. MP10 seems to be better for me.
Running with a high DPS Archon set up btw.
Edit: for comparison I normally do "thelasthopeforrhoa"'s which is more efficient than Alkizier, and I usually net 76mi/hour on MP5.
Personally I tries a few of the shorter runs. But I always go back to the longer ones ^^
And since I play on HC, I can't be quite a carefree as you are playing in your video ^^;
I'm currently going All Arreat crafter lvls (lots of mobs, but I tp out of I get stuck in a dead end with a lot of backtracking needed), Cursed Tower (lots of elites there), ½ Field of slaughter starting at the wp and running towards the bridge and doing that when I get there, then all 3 lvls of the Keep I just love that place ^^