My not watched the video yet (will do tomorrow) opinion:
It would be nice, although Medium format appears much more niche and there is the issue of costs with the (pressumably non) economies of scale.
Lomo and Kodak readjusted 120 film prices as it didn't sell as well as they might have expected (plus price increases).
Wished 220 were manufactured now and then.
If Pentax still has the tooling for 645NII it would be rather easy to finally give it new life with digital insert and have best of both worlds.
Ditto for the 67 as well. Or how closely adaptable the 645Z is to the film version.
A 6x6 or 6x7 rangefinder like the Fuji 6x9 cameras. Fixed lens, some sort of voodoo laser beam secret agent cheapo rangefinder linked to the lens. I wouldn't buy one because I have several already.
Pure mechanical (if possible??).
It would be a financial disaster.
If they designed them well, considering how the Bessa III (W) and GF670 and Mamiya 6/7, a new camera with outstanding optics around the $3-4K might be able to capture quite a bit. MF is still niche, but there are outrageous prices for the Mamiyas.
The last reference is the Cosina Voigtländer Bessa/GF670, now already 15y old, but was it somewhat of a success and how many units were produced?
IMO modern medium format doesn't have that many options, if also limiting the budget. Nor really that much camera model variety depending on what one wants.
An alternate history scenario I have pondered, which would be now great for the sake of medium format ecosystem, would be a Medium Format Leica. Think 6x6 or 6x7.