I can at least help you out on what each perk, that you've talked about on the overall post, currently works (please correct me if needed, and I'll update this post): - High Impact Reserves > Once you have ~40% of your mag size left, you start gradually increasing your damage output, til you reach the last bullet/burst in your mag dealing 1.3x damage. - Under Pressure > Once you've reached 2/3rds of your mag size left you start gradually increasing its stability, and gaining more control of its recoil, till you've reached its maximum potential at 1/3rd of your mag size. - Tap the Trigger > Once you've started holding down the trigger, it significantly increases your stability and reducing its recoil for ~1 second. - As for Exotic Auto Rifles, I've made an opinionated suggestion post, a few months ago, about how to make Hard Light viable in any mode; as for the others, I haven't gotten to them yet. If you want to go take a quick read on my post about Hard Light, you can do so right here: [url]https://www.bungie.net/en/Forums/Post/251842787[/url] Aside from this, this is a good read, and I do agree with you about the Auto Rifles about not feeling right in line with the other weapons out there, but please do keep in mind that SMGs and Sidearms have to be in line with the Auto Rifles as well, so that way all 3 of them are not too strong over the other.