Its geometric distortion apparently is well controlled, and bokeh looks quite nice too. Like other Otus lenses, the overall impression is slightly 'dull' perhaps because the lens artefacts are so well under control?
Your kitchen and living room are much tidier than mine, by the way ....
Well, I purposely didn't show my office or my small studio which my wife allows me (sort of) to do what I want in. You can thank her for what you see.
I am not a tester like you are and you have caused me to spend a fortune, which my wife does not appreciate. I hear you about the "slightly dull," but to me that is more of a base from which I can then explore, rather than a liability. I have all kinds of lenses that ONLY have character and have not much of a level base, lenses I am sure you know well, like the CRT Nikkor, etc. I have no trouble with the Otus, and don't like the old "contrasty" Zeiss look.
I admit that I have to get outside to use this lens, shooting small diorama-type shots, etc. I am familiar with macro lenses and ultra-wide lenses and use them all the time, but seldom shoot at this focal length, so I have a LOT to learn, and I am clumsy at still life like these bottles, although I should discipline myself and learn. I would need more control of the lighting. The bottle in the most focus, Eden Organic Shoyu... I did the logo for that now well-known company back in the late 1960s. More than you want to know.