seriously, while I like the idea, you're treading the tightrope over realism-computergame canyon, and it's a big drop whichever way you fall.
I've used the 'cover-me' shout, in a squad of regulars nobody really paid any attention. I used it lots on my first PHL outings, nobody gave a hoot.
I've used the 'incoming' shout, which is imo the most useful - to indicate a stukka that I could see, what did the bofors guy do, ...continue shooting infantry until he got a 1000lb bomb poured into his face.
I've used 'shit look-out' (same as incoming) to indicate there was a pzIII about to start camping the Tobruk trench line, what did the guy do, he stood up - to see what I was talking about, ...he's dead now.
I'm all for making FH2.2+ more realistic, but there does need to be a balance and compromise. I've dam near forgotten the name of that VOIP thing... think it's mumble, I'm hoping this could be the new toy - the new "FFS I'm reloading douchetarD, cover me!!" "+1!"