I'd like to see the DSR-50. One of the best long range rifles in the world. It has an accuracy of 0.2 MOA ! I'm a long range shooter (only for competitions) and I've heard that this rifle is... INCREDIBLE. The famous magazine "Tactical Life" named it "THe Bugatti Veyron of long range rifles".
I'd like to see also match bullets for the .50 BMG and not always the M2 one.