HMmmmmm… I don’t know about this…
IIRC, most older typewriters used linkages to join keys to the typebar. The franklin on the other hand just has each key on a lever that meshes with geared teeth on the typebar. So I think the layout here is due to the lack of mechanical complexity
The idea of the layout just seems so radical and I see it a bit difficult to use in today’s modern typing climate.
Back in the time of the Franklin, for people buying the Franklin line of typewriters I assume many of them were a bit more hunt & peck than we are today. I can’t even imagine resting my fingers on a ‘home row’ in that layout and how my fingers would feel after needing to constantly reach out to press keys for an hour.
It’s a fun and unique look, but I have my doubts if the layout could be translated into the modern context aside from an homage or a joke.