Niche merciless build

What do you guys think about my merciless build? I know the merciless is kinda meh, but it's one of my favorite exotics for some reason. This build has zero recoil and each shot is atleast 500k-600k crits are more obviously, headshots are 1.6 mill.

I tried it in PVP and honestly it does decent damage but I feel this would be more useful in pve. I use this with a rapid fire mod for my controller. It's basically just like an AR. Before you all bash me for using rapid fire. It just helps with finger cramps from hours of grinding lol.

(Posted some screenshots since I can't post videos I guess)