I would love to see the Olympia make a return. Right now the only pump action shotgun is the R870, and that thing is a beast. The R870 is a brutal weapon in anyone's hands. The olympia is terrible in most people's hands, but deadly in the right hands (mine).
A semi-auto are that's worth a damn. It the FAL and the SMR should be pulled from the list and put the Mk14 back. Basically Trey took that gun and split it in half. The SMR has the Mk14's power and the FAL has its versatility.