In his essay "The 17-tone Puzzle -- And the Neo-medieval Key That Unlocks It"
George Secor wrote:

"Is 17-WT, then, the final step in this alternate history of tuning and
temperament? At this point I think not. Once the resources of the 17-tone system
were fully exploited, we could expect that other options with better intonation
would be sought. I have tried a number of the progressions that we have
discovered in 17-WT in other tuning systems, and there is a near-just 13-limit
system (that includes rations of 5) into which virtually everything that we have
tried can be transferred; the progressions not only work, but they sound even
better than in 17-WT! Hopefully, this will be the topic for a follow-up
article."

George, or anyone here, can you say more now about near-just 13-limit
temperaments that sound better than 17-WT?

Also, for any such "better" temperament, can you devise a keyboard or
buttonboard layout (or layouts) for concertina, accordion, bayan, bandoneon,
symphonetta or some other acoustic free reed instrument?

Just curious!
==
Manu