I could probably provide not just several ideas but also point to some neat potential sprites for 'em, if you want. Oh, and this just occurred to me, but actually being able to toggle the firing mode (in the more technical sense, I'm a bit of a gun enthusiast) of the weapons would be swell, like you could toggle the SMG between Semi-Auto, Burst Fire, and Full Auto, for instance, although that might be tricky to program the controls for.