Suppression is pointless . LMGs are useless
The only advantage of LMGs is being able to put lots of bullets down range and 'pin' enemies.
With no visual or aim effecting element to it whatsoever, suppression does effectively nothing. They can simply stand there and calmy headshot you because every other gun is better, stats-wise. Even the SMG - because it has absolutely no recoil - can beat the LMG at mid+ ranges where the LMG should excel.
Yes I know it stops them healing. This is almost always - at the ranges LMGs are intended to operate - going to mean nothing.
Your only option is to rush their position occasionally taking a shot to keep them supressed and effectively announcing your approach so that when you get there they, or their buddies who will have turned up by now, hose you down with vastly superior TTK.
It's yet another bit of brain dead 'design' from DICE to make the players of 'other franchises' and the kill-streak streamers comfy and happy.
Can't have them not able to employ their uber gunplay skills every second, can we. Gods forbid they ever have to make tactical choices and use cover or deal with effective ranges.
Nope, just stand there, return fire and win because they are using this month's meta-weapon.