Wow, those are pretty crazy! Funny enough, while that might fix the perfectionist in tune for me, it breaks it for aesthetics. 
I think I’ll stick to my slightly out of tune, but looking uniform bass.
I actually thought that fanned fret instruments like the below were for intonation, but apparently it has nothing to do with it. On that topic, I found a cool page here that goes into that in a lot of detail: Fanned Frets Explained: Everything You Need to Know - Guitar Gear Finder
And yes, sorry for derailing the topic a bit. 