Yea, its because squad bunch in cover.
Guess where brit infantry needs to be at all times to be effective?
Guess where all squads in the game need to be at all times to be effective?
What I am saying is that everybody is vulnerable to being wiped, not just the Brits, it's the nature of this game and has been since the beginning.
I have not had time to test out the the ISG and its new vet, but if it really is one shotting squads on a regular basis due to it's AOE and accuracy then it does need to be toned down.
Try testing things out for yourself several times before just posting up some unadulterated garbage.