As far as the machine gun sniping is concerned.... Carlos Hathcock recorded a kill at 2500 yards with a browning m2 .50 cal machine gun in vietnam with a 10X unertl scope mounted on it.
As far as new weapons are concerned... I would not so much like new weapons, maybe a few but I would really like to see new equipment. For example....a tac radio to call in some close airsupport or an arty stike. Get pinned call in the fire support. A customized loadout would be extremely cool. A spotter scope for a sniper would be nice to have. I also would like to be able to carry smoke grenades while i'm sniping too. Nice diversion
Some of these ideas about swords and "napalm launcher flame throwers" are for lack of a better word.... stupid.