And multipost, sorry, but the ammo thing is curious so I decided to indulge in some theoretical
Fish Heresy
Drop the engine to an XL170 instead of the maximized 180 and you gain half a ton of machine gun ammo in exchange for 'bout eight kph footspeed. That's 50% more damage from the machine guns. I don't know the fire rate of machine guns offhand and so can't calculate the total fire time you get per ton of ammunition, but the extra half-ton could be pretty useful. And frankly, anyone who has trouble hitting a Piranha at 150kph is gonna have trouble hitting it at 140kph.
Personally I think I'd go with LMGs specifically to alleviate the ammo issue. Yes, standard machine guns better match the range profile of the uPLS and do better DPS, but the LMGs have better endurance. Hell, replace the arm-mounted uPLS with uERLs for a negligible loss in DPS and you get two full tons of ammo for whichever machine guns you use. Go with LMGs and the ER micros better match up there. Probably a bonus as negligible as the lost DPS, but you could at least fish for crits on open components at 200, 250 meters.
One could also just run
uERLs in generalover the uPLs. Get back that maximized XL180, keep both tons of LMG ammo, and free up the weight for an AMS with half a ton of ammo to help blunt Streak issues. Or run the eleventh heat sink just because you heckin' can, ensure you never have to stop shooting for anything. Would be worth the experiment to see if the cERL/LMG arrangement's improved reach offsets the lost DPS. I think I may just cave and buy a Cipher the next time it's on sale, yeah. Name it "NoShootyPlz" and see how many people pay attention.