It would be nice to see an auto-shotgun of some type but not fully automatic as i stated earlier. Just something that does not require being pumped after each shot or need be reload after 2 shots. Having a different side-arm would be pretty kick-*** also, maybe seeing a revolver of some type or perhaps a Five-Seven. Something more powerful then the assigned 9mm but slightly less powerful then the Desert Eagles with a fair amount of ammunition. Back to the assault rifle side, the M4A1 might be the most common weapon in video games, but it is also the first pick for most special operation soldiers around the world. Seeing an MP5 with an extended stock would be nice but that would just make more weapons for the Commando perk. It would also be neat to see a weapon specially designed for the Medic perk, sure he has body armor but that leaves him with regular stats with the other weapons. It would be nice to see a well developed, general purpose weapon for all perks to use. Either it be a semi-automatic, fully-automatic or burst fire weapon would not really matter. As long as it stays realistic to a certain extent. On the explosive side, remote activated explosives and and time detonated explosives would make ambushes and and guarding several quick points easier. But hey, it's just my way of seeing things.
