For example that scoped assault rifle could be added as a another modification to the original Assault rifle .
So many unused original weapon, and you want new?
FN fal can be used as low ranged AR.
AR can be used as long ranged AR.
And XL70E3 can be used as scoped ranged AR.
If bursting will be changed somehow and there will be any difference between 2 and max distance hexes. There is also gauss rifle and pulse pistol/rifle that aren't used in game, the same as G11. Also most other weapon doesn't have its own role, for example any pistol except for .223.