By the way re: this part:

> Also, any intention to add a 'rotate view around selection' option
> (edges, faces, object etc.)?

You can already center the view on the current selection by using the Reset button that's on the toolbar at the bottom of a viewport. If you have a selection and you push that button the view will zoom to fit that selected object (whether it is an edge, face, or a whole object) and the center of rotation will also get set to the center of the object's bounding box so any rotation after that will pivot around the object.

So you can use that button now if you want to focus on a particular object and pivot around it.

If you want to pivot around one point in particular like for example the corner of a box, use the "Area" (short for Zoom Area) button on that same toolbar - that will let you pick a point and a zoom rectangle and the view will get centered on the point that you pick and the rotation pivot will be placed there as well.

- Michael