It's the cost of the unit and its up keep that makes IS bad in long game. Also necessity of using cover makes the situational. Sometimes you just can't stay in one.
True but they are good infantry, although expensive.
Their real issue is the sniper. Also the fact that they can upgrade their size to 5 is dumb. They should be 5 man squad by default without the need to upgrade.
Reason why WM sniper is so strong is because he was made to counter Soviets. I doubt they where even thinking about Brits at that time.
So now Brits paying for this with their 4 man squads.
I am surprised how Brits even passed the testing with how they are right now.
But since its Lelic I am not surprised anymore. Not a single patch was done without breaking something.