We all know the Catalyzer's bullet speed is so slow that you can out run the bullet. Of course, I don't know why its so slow, but i have an interesting suggestion. Instead of increasing the bullet speed, why not make the normal shot a laser that shoots through enemies? It would have roughly the same damage as one normal catalyzer shot right now(to prevent it from being op). But now we would have a reliable way to shoot the charge shots, and can even explode them mid-flight. Also, the laser wouldn't go on forever.
Not a bad idea, but I think you'd probably have to reduce the normal shot's damage a little to compensate for the speed increase.