I like it, it adds another dimention to the gameplay. Just have a friendly fighter straffe the maproom or hose it down from your M3 before dropping the troops.
I think it is great. I can imagine someone hiding out, hearing the M3 approaching, hoping noone sees him standing there with his .45. He can see the M3, but does the M3 see him? Maybe the M3 is not paying attention. Waiting for the first troop, and poping him (gangsta style with the sideways grip). Then the M3 notices. Pulls forward and hoses him down like bird tur_. Pretty amusing to me.