Determining whether the different Gen 3 platform firmware versions are in sync is just way too difficult IMHO.
I would have loved it if when the FM units were introduced, their Axe-Fx III based firmware versions would have used the same version number that they were based on. And kept the matching version numbers from then on. If the firmware versions are in sync, the version numbers should be too.
At the next alignment of the firmware versions of the FM units to the Axe-Fx III, It would be so nice if their firmware version names would also align.
after that point...
- Minor changes that leave the units otherwise compatible would show a change in the hundredths decimal.
- Something more significant like added models, or functions (but existing preset are unchanged) would show a change in the tenths decimal.
- Any major changes to the modeling algorithms that would alter any existing preset would show a change in the actual firmware version number.
In the past, when a completely new modeling algorithm was introduced (Quantum, Ares, etc..), the firmware numbering system was restarted. Maybe the next Cygnus X3, or whatever would be a good time to start over on all three units and get them sync'd up.