That's cool, a VX-6 would be good to knock off the list, and I think it's likely to "just work" because it shares a lot in common with the other radios in that vintage (VX-7, VX-8, etc). That said, I haven't actually tested those since 2019, so I should re-do that just to be sure. I'll try to do that today, but will look forward to your report about the VX-6.
I confirmed that my VX-7 and VX-8DR radios are still good, so I suspect your VX-6 will be no problem.
Also, this morning I scraped some data out of our error reports and added a "Market Share" column to the testing matrix, which gives us an idea of which radios are the most important to get tested.
https://github.com/kk7ds/chirp/blob/py3/tests/Python3_Driver_Testing.md
Luckily, we've got all the major ones already, and even though only 53% of models have been tested as working, that represents 77% of the share of chirp users, which is pretty good. Interestingly, the VX-6 is oddly popular amongst its siblings:
Yaesu_VX-3 0.08% Yaesu_VX-5 0.07% Yaesu_VX-6 0.16% Yaesu_VX-7 0.09% Yaesu_VX-8DR 0.03%
Still tiny compared to the almighty UV-5R, but going strong compared to peers.
I'm also thinking of marking all the Kenwood live radios as implied tested, as these are almost all the same code, and being string-based, pretty solid. That will increase our numbers a bit more. After the initial conversion, I've not encountered any problems with any of those that I've tried.
I think starting to push users to the newer builds (especially if they're on platforms like Linux and MacOS that desperately need a modern platform) when 80% of them will be supported is pretty reasonable.
--Dan