I like that idea Djinn, dont know if its possible but it'll be amazing to see it!
I also try to play like if it was real life or something, taking cover, walking/taking cover behind tanks, etc, for myself because i enjoy it alot. Giving covering fire however, its not usefull.
Combat in FH2 is mostly fast, ends real quick. You cant gather enough information to give Effective covering fire. Lets say theres a MG42 firing at your Squad position, you're all behind Cover. Once the SL yells to the Selected men "Covering Fire" the MG42 has killed them all. Why? because when you get shot and you rush for the Cover, it doesnt give you enough time to see where is the Firing coming from, and when you start giving "Covering Fire" you're doing it totally blind, shooting at anything, totally missing the targer, thus getting killed easily.
If the combat was a bit slower (Alot of Deviation like in PR) Then covering fire will be ALOT more usefull, but ALOT MORE. Because when you do Covering fire you dont feel Supressed, you're basically fighting fire with fire. I believe 4-6 Garands is enough to supress a single MG42.
Also, with a slower combat mod, as soon as the MG spots you, it'll start firing, since theres alot of Deviation, no bullet will hit you, then you'll know where the MG is, you take cover, gather information and even make a quick plan to take it out.