The player is contributing to the game, they are defending their base. All this wish from the OP amounts to is what HiTech posted earlier. They want to make base attacks easier for them with little risk. Now that to me sounds like a player that is really wanting to avoid combat and not the player in the manned gun defending the base.
Little risk as an attacker? How so? The guns can still fire, most of us are requesting a penalty for a downed occupied manned gun. Maybe we should take away kills on bomber drones too. M3s with supplies maybe should no longer count as a kill.. just points for score?
The guys asking for these guns to be removed are being a little extreme... but every sortie in anything modeled in this game should count as a death when killed in it. Its just flat out unfair if it isnt.
Vulching a base has nothing to do with this.. the scoring of a downed occupied manned gun is the discussion.