VoG isn't irrelevant. The VoG weapons have unique perks and some of them have perks that are impossible to find on weapons from engrams. Vision of Confluence has full auto, you can't get any other scout with full auto. Fatebringer has firefly, no other hand cannon can get firefly. The 31 attack difference is significant, but the superior perks make up for it. So when your pissed off because you think your Vog gear is obsolete, think about the superior perks. Plus, all attack is equalised in crucible.