Ok, I would start off by saying most of this idea is from a friend of mine. His gamertag is Arrtaniss15.
This would be like custom controller mapping but with weapons.
There would be a list of every weapon and you would be able to choose which number of sensitivity you want. So lets say shotgun would be 8 so you could move faster in short range combat situations but your sniper sensitivity would be 2 so you can snipe with slow movements and precision.
I really liked this idea because I typically play on sensitivity 1 or 2. This is almost and instant kill for someone fighting me in close range because I can not turn very fast.
We had also come up with another really good idea but I can’t remember it. If it comes to me i’ll be sure to edit the post.