The other ideas are great, what I would like to see, is the capability of the standard AR15, carbine or not, to at least 200 meters, and maybe beyond,I have found it to be much more accurate than you might think. Different sighting systems to allow 300+ meter hits on a given target. It is no longer, your father or grandfathers AR. I still own an SP1, and with 55 grn pills, delivers, good, acceptable groups at 200 yards.