I still believe that this gun and the 74u should remain in the game, with the same potency as they initially had.
BUT, I think they should completely vanish from the gun selection after you pass the halfway point of your first unprestiged level.....never to be seen again unless you happen to pick one up off the ground from a slain noob.
Making guns more difficult to use would make it a lot harder to sit and camp, because you'd have far too many variables to compensate. With the current personality of the Fagmass, no skill or talent is required, nor is any movement. It's a sniper rifle with CQ superiority....so why bother moving around, then gun enables one to be a douche and just hang about picking people off from any range, and even though any pinhole like a laser beam.
Give it to up-and-comers--it's a wonderful training wheel weapon-- but wholly eliminate the seemingly endless hoardes of 15th prestigers with 40 000 kills with his Fagmass and 1300 with their next closest weapon.