Sigh... I was just going to suggest zooming with scroll the wheel without the ctrl key as well. It's just a minor irritation for me, coming from AutoCAD, to have to hold down an extra key to do something so simple as zoom. Would you consider an option to change this then?
But that aside, how about panning by holding down the middle button/Scroll wheel and moving the mouse? Like in Adobe Acrobat(but uses all buttons the same), AutoCAD, 3D Studio Max, etc. I would think it best not to do it like in Internet explorer or Word though.
In any case, I agree, you have created an amazing tool. Keep it up.
