Water Bear, on 28 January 2018 - 12:39 PM, said:
It's going to need agility quirks, armor quirks, or - god forbid - maybe both. HGR DPS is absolute crap. If the thing can't a) back away to avoid taking damage or

have so much armor it doesn't mind taking damage, then it will never deal more damage than it takes.
Edit: point b turned into an emoji. I will allow it.
Looking at Heavy Gauss in terms of DPS is a mistake. First, heavy gauss kills using less damage than most weapons due to its high pinpoint damage. Second, front-loaded damage always skews actual comparisons of damaged exchanged.
Dual heavy gauss builds in particular are very efficient killing machines given they all tend to have excellent convergence. An instant 50 damage to one location is powerful. Given that a good shot will land successive hits with little to no spread, you can cripple or kill enemy mechs rather quickly. Given there's no spread, you will generally kill mechs more efficiently than with dakka or lasers.
It also has a rather notable intimidation factor that makes mechs hesitant to push into it. In trades that first hit tends to make enemy mechs rather gun shy, since most are going to be dangerously close to losing a component.