Not everybody wants to play PvP and I speak for others not everyone is good at it either. Considering that all the Crucible vendors have guns with better perks than Vanguard vendors seems VERY unfair for those who are actually looking for those perks. Not only that but PvP (As I was told) only has 8 while PvE has like 3-4. WTF Bungie? Do you REALLY want only PvP players or do you want gamers to enjoy this game? If you only want PvP based gamers, you're not gonna last for long. I support that PvP is an option, just stop focusing only on that! Things that could help support PvE:
Offer Factions to use vanguard marks and commendations (Dead Orbit, New Monarchy, FWC)
More game modes for PvE
Make Vanguard vendors have guns with BETTER perks (Just as good as Crucible vendors or better if possible)
At least offer something for players who don't want to do PvP. Constantly playing Iron Banner isn't gonna fix it, its only making it worse
EDIT: As for those who keeps saying the upcoming DLC, I am well aware of it, it still doesn't excuse the fact that PvP players have more access to content and vendors more than PvE players do. The placements of vendors should even identify that. Crucible vendors are located at the center part of the tower while Vanguard vendors are located at the sides of the tower. What should this even mean?
EDIT 2: It may be an opinion but I have also thought that because of PvP, its the main reason why guns keeps getting nerfed.
Why was the Pocket Infinity nerfed? Because it was a full auto fusion rifle with a huge magazine size and it was proven to be OP in the crucible so they nerfed it!
Why was the Vex nerfed? Again too much magazine size and it was proven to be the most OP gun at the time and being that with a huge magazine size they had no choice but to nerf it.
Why was Auto Rifles nerfed? Because people use it too frequently in the crucible!
See? No matter how you put it, its always the crucible reason why guns keeps getting nerfed, BUT its PvE that BUFFS weapons (Again thats just my opinion).
I'm sorry, but the PvP community is going to keep Destiny alive until Destiny 2.
We know what Bungie wanted to make, but they -blam!-ed up. It's time the community accepted that Bungie is going to take the most lucrative path towards continued success with Destiny.