Better guns out there. Elemental damage doesn't make it better. Only good for arc burn strikes to me, where it is quite fun to use it. See, PvE is all about raw damage and inflicting as much damage as possible to an enemy. While Zhalo surely does that, it only comes in handy on weak trash mobs like Thralls. But killing a bunch of low tier enemies pretty fast is what my LMG and Rocketlauncher can do as well (or even grenades) and,as heavy weapons, they also have a massive damage output at the same time. So why in gods name, lol, should I use a low/medium damage assault rifle the real dangerous enemies just sponge like crazy. I mean the time I put into emptying a mag into a higher tier enemy can be shorten drastically when using a gun like a handcannon or scout. And that's important to me and in Raids. Everthing else is a waste of time. High impact ARs are a better choice if you would take an actual AR into PvE (+ a good set of PvE perks).