I hadn't thought of that at all. Including two scrollwheels would be doubly expensive and thus kinda wasteful, and including only one means giving a south-pawed middle finger to the sinister folk.
Including two wheels lets you scroll TWO DIFFERENT THINGS. That would be awesome.
Many games use mouse wheel for weapon switch, and something else for choosing secondary-items (e.g. grenades in Far Cry). You could use it to queue up preselected groups of chat commands usable with the touch pad ("enemy in flag room", "enemies inc to mine", etc), use it for a throttle control (!!), or all sorts of things.
Having two scroll wheels instead of one is not as bad as you might think -- and even just using one still lets you remap them as you see fit anyway.
I'm not convinced of that. You can argue that letting the dominant hand focus on things other than scrolling would be a better scheme. It probably doesn't significantly matter, and I think it's silly that people insist on mirroring things that don't need to be mirrored, like mouse buttons.
