This is about the gun dlc and the SWAT first off you need to fix and re-buff the SWAT it's completely broken past medium range whenever you have Select Fire on it the gun is basically useless so almost an impossibilty for Diamond Assault Rifles. As for the gun DLC keep doing what you are doing it's a great addition to the franchise and I see great promise for Gun DLC being a HUGE success start making more then one gun for the map packs make like 5 or 10 guns every map pack cause that will make more people buy it.
I agree with you about the SWAT, that gun is not effective enough.
def don't agree with 5+ new guns per DLC addition, It would end up having like 3 guns that are almost identical.
I do like the idea of stuff in the DLC other than maps. I'd say since there are 4 map packs, the first one have a new gun, the second should have a new peice of equipment, the 3rd should have a new scorestreak, and the 4th could have a new perk.