Hi Mike, I'm glad the view spinning will be useful!

> Also, would it be someday feasible to implement 'Spin' with
> other viewport manipulation methods, such as with a View
> Control button for fine-tuning, or maybe a way to do it on
> the fly with mouse manipulation?

It's possible, but re: view control button - it's good in general to avoid having a zillion buttons clogging up the screen, and re: mouse manipulation all the regular buttons like middle button drag, wheel spin and right button drag are already occupied by options so it would have to go on some kind of modifier key and I'm pretty conservative about populating those too.

- Michael