The machinegun alt-fire actually makes a half decent sniper rifle.
One of my favorite things to do on Oil Rig is to bounce over the machinegun spawn before doing anything else, and then hop up to one of my patented kozak spots and pop away with it for the rest of the match.
It might be interesting to have some sort of bounce shield for laser secondary, a sort of quick blast of a shield that would cause projectiles to bounce away. To preserve balance, it would only be a quick blast (so you would have to time it well), and there would have to be a significant wait between blasts.