[*]Weapons - Look for ways to improve on the M4/Eviscerator
I'm probably one of the few people that like the M4 Combat Shotgun in it's current state. It's distinct, different from the other shotguns, it's got a good fire rate, a tight spread and a nice red dot sight, making it more effective over a longer range. I don't feel that the gun needs to be changed significantly, but the weight, price and magazine capacity could be changed. (Perhaps you should increase the mag size to 8, which would make it a more popular choice).
Someone mentioned in a post that the M4 is a more precise, ranged shotgun, and this should be emphasized, to make it really distinct from the other shotguns. I welcome changes to the gun, as it's my favorite shotgun in the game and I wish more people would appreciate it. What I don't want to see is the shotgun becoming too similar to the other shotguns; it should be celebrated for it's difference.