The mines were cool in my opinion. But, i would like to see them set in the proximity mode only last for 10-20 seconds. Alternate fire should be remotely detonated.
I would also like to see something origional with the repeater. The cliche today for machine guns is a fast firing fairly accurate, or a faster firing less accurate. Personally, i wouldnt mind seeing something along the lines of the same 3-shot secondary fire, but with them 3 shots weaving in and out of each other, so that mode is better for medium ranged assaults.
Finally, a balancer for the concussion rifle would have to be an explosive weapon, with more power, splash, and momentum but a slower firing rate and projectile velocity.
^^^the above post is likely off topic^^^
"save the concussion rifles"