Overall finish has also improved with better defined and more clean edges and better finish of the inner part between the lugs
Great comprehense write-up on the subject. However I don't see a better finish of the inner part between the lugs on my v4 case in comparison with my v3. Still needs some polishing work to get rid of the machining lines and have a more gen-like appearance. Or maybe I just was unlucky.
However, I'm awaiting QC pics on a new v4 caseset I ordered to update one of my builds (I also asked for caseset with a real v4 CG but I know chances to get one are almost non-existent).
I'll let it know if anything has changed or if I would get an updated CG.