@Marlin: A nice feature would be to add a preference that allows reverse scroll wheel behavior.
From a UI/UX perspective, when the wheel is pulled toward the operator, the objects would get closer; while pushing away, the model would get further away.
While a number of Mac programs work this way, Rhino behaves inversely. Sure one can eventually get used to this, but when switching between programs it’s a bit of an annoyance. An option to reverse the scroll wheel behavior would be one of those subtle and very nice capabilities, appreciated probably by a few—especially newcomers.
FWIW, I’ve tried SmartScroll to reverse the scroll wheel behavior; however, there is a brief moment where the opposite of the desired zoom happens (if you want to zoom in by pulling, it momentarily zooms out, then in). Any other known workarounds?