A funny thing happened on the way to the Conflux... *Vid* (Destiny)
I've played through VoG a bunch this past week. On Wednesday night I was helping a group of friends through the conflux section, when I suddenly discovered how to make defending the centre stairs much... easier.
Check out the first 30 seconds or so:
(Apologies if this is already a commonly known tactic; I don't often defend the centre stairs)