You can use the mouse plus cursor keys, you know. While good for exact aim, I find it inconvenient as the left hand (controlling heading) has to regularly leave the cursor keys in that setup to access all the other functions. Controlling heading + torso on the numpad solves this nicely.
Scroll wheel for zoom for sure sounds like a great idea, though! Then, if the mouse had a couple of more buttons (to activate schematic camera, switch nav point and cycle through enemies, activate jump jets etc.), it could work. In the end, you need keys somewhere 😉
