This topic has come up several times, so I hope the folks at NNA are tracking this request. It really is not nitpicking to request this feature; I use other programs that incorporate wheel zoom and just find them more intuitive and less intrusive into the drawing process. SketchUp is a great example of how to incorporate flexible zoom, pan, and orbit using the wheel mouse. I have stated before and firmly believe that this simple change to the user interface would right now be one of the most effective in terms of attracting users to switch to VW.