Problem with that is simple...since PRs were nerfed and just about everything around them was also destroyed, there are very very few legendary primaries worthy of the title "legendary".

The thing is that if it is only legendaries then at least there is an even playing field and in PVE your exotics will remain veeery powerful so you have a choice of an op weapon for pve activities to calm any nerf to the legendaries. now the only viable weaponry now in the meta is the exotics and only pulse rifle legendaries are considered viable in a competitive stand point

And therein lies the problem. When Bungie did their balancing they favoured Exotics way too much over legendaries. That's not balance, that's a (forgive the metaphor) proverbial lighthouse in a storm. People see it above all else and will naturally gravitate towards it because it works better than what they have/had. Was the same in Vanilla Destiny...SUROS ruled Iron Banner. Then it was Thorn...then Pulse Rifles. Difference with PRs was simple...it was just Red Death and Bad JuJu doing all the work - there were a few others in the mix also that were used heavily - more legendaries able to compete with the exotics as it were.

the point of PVE is to work towards rewards that in turn makes you feel more powerful, that is not needed in PVP, or do you think otherwise?

Honestly, I do raids to help me succeed in Trials and Iron Banner. I also do them for the accomplishment factor...it feels good to beat the raid for the 1st time etc. But beating the shit outta mindless AI is only so fulfilling. When you can predict an enemy's movement then it becomes monotonous very quickly, but each team in Trials etc presents a different challenge, be it from dealing with Hammers to dealing with a good sniper/good grenade work. Lets face it, when Dregs and Hobgoblins toss nades at you, they are absolutely horrendous at it.

how about when vandals snipe you?