Hey RandomRecoil, sorry to stalk you but this is relevant to the topic, and I made a post about this myself, but is there any chance that the AA sights on MGs up upped to 2x or 2.25x instead of being at the 1.25x where they are?
Most of the default iron sights offer a decent, unobstructed field of view, especially the Lewis Gun, and with an MG you really wanna have good target acquisition since it's a medium-range weapon, besides the Madsen, and it can be hard to keep your eyes focused on an area you're suppressing for your squadmates with the muzzle flash. I always use the 3x on my MGs since area denial is an important aspect of the squad's automatic weapon, but that heavily obstructs field of view, as it's intended to, and I like to maintain more situational awareness while also being able to observe any targets trying to rambo it through my suppressive fire, not to mention the MMGs don't get 3x, as I know everybody on this forum is happy about.
Not to mention engaging airborne targets with MMGs is pretty pointless despite the specializations for them, since the typical airborne engagement distance is usually (approximated) 300m-500m, having a higher-focus on the spider web would alleviate the range issues and also allow better calculation of bullet trajectory on a fast moving target.