Hi Metin, thanks for testing it! I think I'm getting close to figuring out the full screen thing, it seems to be a fairly delicate area.

re: Zoom Area - yes when you pick the center point for the zoom area that's a full 3D point pick that's happening there for the center point, so it behaves the same as if you were picking the first point for drawing a line for example and you can use snaps. That picked point will then become the rotation pivot point for the 3D view. That helps a lot with further view manipulations staying around that particular area of the model.

If it did a purely 2D drag like you're talking about, it would be difficult to control where the rotation pivot point is going to be located for the 3D view, that's the problem.

- Michael