Moving around for the sake of moving around just for the fk of it wasn't fun. It was just as braindead as anything else. Believe me I played Momentum (very well I must add) and while fun in certain fights like dragons ultimately it DOES NOT WORK FOR MYTHIC RAIDING. And we saw this clearly with many fights past EN where stack and move, You-have-5-feet-of-space-to-move and DONT FKN move at all were mechanics on a lot of raid bosses in NH, Tomb and our current raid tier.
And yes part of the problem was the goddamn duration. Move around like a freaking idiot every 6 freaking seconds was RETARDED. Do that or lose DPS... which is in fact the same DPS other melee have by default and without taking a risk (for no reason other than DUH DIP DOH! I wanna speed to the other side of the boss!!!!! ). And no matter what all that movement did lower our ultimate awareness. And was just one more factor that others controlled for us in what they did (standing around with debuffs, dropping ground effects nearby etc). Who among you can remember not being able to burn down your add in TOV because you had no fury but needed to stick to your rune??
Demonic seems to be the direction DH should go. It just needs from tweaking.