For lieg they should remove suppression and maybe a bit of range, then give it a direct fire mode, where it loses damage but deals suppression. Basically a mortar, MG hybrid. OKW could use a suppression unit.
I'd love to see that for PACK howi, 6-8 short barrage, current cooldown and vet.
No idea what to do with ISG though, same treatment doesn't seem suitable, it'll always be a problem as long as it have 100 range and pinpoint accuracy, hardcountering anything that stops for a second for a firefight in cover.
