I have done this many times in video games just because real world restrictions do not apply. For example assault rifle does more damage, but in a confined space it is not an ideal weapon to use. I use it anyways because I do not face the consequences plaguing the rifle in close quarters. What I am proposing is bonuses for weapons in specific areas of combat like SMGs get bonuses inside because they are better suited for that area and the assault rifles on the other hand has a negative bonus modifier do to its long barrel which is not suited for close quarter combat. I know this may never make it in to this game but it would be nice to see it in a future title.
The Mechanics and therefore the damage output and round type of the gun does not change whether it is inside or not,, this would be ludicrous as you could no longer snipe point blank effectively inside for example, it makes no sense, absolutely no sense, just makes things more complicated and less enjoyable, Say something next time that makes sense, although your characters agility could be decreased when haulking a minigun through a drainage tunnel yes that would make sense,:thumbsup: , not becoming less effective damage wise-your idea,, :thumbsdown: :banghead: