This is my attempt at a work-around to the recent Gauss+PPC linked Ghost Heat. You can still run 2x Gauss + 1x PPC well on the WHM and NTG, but this will avoid the added heat altogether. The reduction in cooldown for Heavy Gauss puts it nearly in line with the HPPC. As well, the WHM-6R has a PPC velocity quirk which puts the HPPC velocity within 50m/s of the Heavy Gauss. That's almost too good to be true. The build was cool enough with just the one HPPC, so I added 3x ERML to have a little more options. I typically play it as a combination of Gauss+Vomit+PPC. That means that I will Fire the ERML as soon as I start to charge the Heavy Gauss. By the time the ERML duration has ended, the Heavy Gauss is just ready to fire. Then release the Gauss and fire the HPPC at the same time. I've only played the mech once and it *felt* really nice to play. I performed decent and scored 800 damage with some misses (learning the weapons) and a couple shots remaining. Highly recommend this build if you enjoy Gauss+PPC.
Good call on the ERMLs, I had thought of this speedier variant with less face time and trying to use a TC to improve the velocity a bit (though it can be exchanged for 2 ERMLs in the side torsos):
