I generally don't have a problem with the gun because I assume everyone has a sos and I act accordingly. The problem is, like you mentioned, objective based gameplay. When everyone is forced into tight areas the gun becomes stupidly overpowered.
Honestly it is the only thing that has annoyed me in the beta, everything else is great. I think a fix to the problem would be to reduce the area of damage for the gun. In that I mean that while the gun doesn't have much range in terms of distance, the spread of the shotgun is ridiculous. I've had people looking almost perpindicular to me and still downing me with a single shot. Decrease the spread and tighten the reticule while keeping the range severely limited and maybe it will fix the problem.
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