VoG is a better design. Crota HM is "hard" due to the glitches, bugs aka sword disappearing--> Almost a guaranteed autowipe, terrible lag people have been encountering, being forced to be under level,and more bullet sponges adds, "anti cheese" tactics such as the gatekeeper that will 1 shot you.
This is exactly what I got from watching streams. Atheon HM was bugged, but at least wasn't that tedious and let you regen your health.
Well, thankfully my warlock has the raid helm with infusion, so the health issue shouldn't be that bad. Titan should be fine too. Planning to run HM Crota until the Word drops.