New Guns?!?!

Ok so I was thinking lately that we need some more weapons. I was think that some good weapons would be like somethat of a Grenade Launcher such as an M32?
And I think some sort of Bazooka would be pretty cool as well.

One more, I couldnt help but think maybe even a Sawed Off Shot GUn?

Just curious as to what people think of these ideas!