FYI, I have imported the Pro1 FinQwerty v1.5.1 key character maps (kcm files) into my LineageOS builds. If there are other kcm files that people have worked out for the Pro1, I'd be happy to add them as well. The current FinQwerty maps add support for Czech, Danish, Finnish, Norwegian, and Swedish, as well as the alternate German mapping.
For reference, you can find the patches required to add additional kcm files to a device build here:
https://github.com/mccreary/android_device_fxtec_pro1/commits/lineage-16.0/AsantiKeypad
The last of the three is not necessary for the stock Pr