constrained orbit on viewport

[Hellsparks]

Using CADrays to take picture in multiple angles is extremely unintuitive. the slightest movements of the camera tilts the ovject sideways and there is no clearly visible way to correct it?

it would be nice to add a navigation ball like other CAD software put in the upper right corner so we can easily swap between a set of premade camera angles. as well as manualy typing in viewport angles and position.