I entirely agree, V7 is generally much better and is a pretty complete version even though it is labelled as alpha.
However it is not quite so suitable for a couple of the particular builds that I see there were in the workshop. First, the C270 webcam basic optics will not fit a V7 body, it requires the lower height of a V6.1.5 without the slide riser. Making this work in V7 is an aim, but it is not a trivial change. Second, the V7 is greatly improved as a motorised microscope, but some of those improvements are not useful if it is used manually. The generally improved robustness helps, and the base is much more easy to use with a Raspberry Pi and Pi camera, but if you don’t need the motor cable tidies and the Raspberry Pi it is all slightly bigger and takes longer to print, particularly the base.