I personally feel that:
1) Feline needs to be toned down a little bit(everyone is running around with this gun and its getting boring)
2) The Shotgun needs abit more range.
3) Grendel needs to be tweaked so that more players will use it; A very situational rifle which cause the Scar and Scarab to outshine it in most situation.
4) Secondary semi-auto pistols needs a buff or atleast increase the speed of which you pull-out the pistol.