Maybe the camo can be a stat bonus or something i mean if it blends in it could be like a +5 stealth stat bonus camo maybe i shouldve thought this over more than just instantly posting it maybe camo wouldnt be a great idea but when i started this i thought it would be great and i didnt think of how other people might react to camo or red dots
Red dot sights require batteries. Batteries which would be better off powering something else and people would want it powering something else rather than something that the iron sights work just fine for.
The camo, I wouldn't really see happening. The desert is well ... desert. The USA was fighting a war in Canada, China, and Alaska where exactly would desert fit into that? Also, things like Combat Armor and Power Armor I presume are all military issue which means that they would all either have the traditional forest or snow camouflage (except for Power Armor, which is not capable of stealth so why bother painting it). Yes, people could paint them camouflage but it barely even works IRL, so why really bother? Except for just design or something.
Those are the reasons why I don't think they should be implemented but I still may be wrong with the whole camouflage thing.