Dude, I've had this mod since it came out, and I just thought when I checked up on it again, that someone(probably going to be me) should make a cool trail connecting to whatever object in which is being moved like a tractor beam

. Or a sweet muzzle glow like the grav gun from halflife 2.
I was also thinking of doing something with the plasma pistol, making the skin more blue where the green is and change the muzzle flash blue and projectiles to a blue lazer then it would have the same general effect as this grav gun.
(Also I would release multiple map patches)