consider a localization scheme that allows you to manage various UI and feature sets based on chosen location

Erik,

That's a good idea. This year the US rules committee has indicated
that "It must not be possible to enable the prohibited functions
added artificial horizon by changing any device setting or memory
location (i.e. registry)." So, we would have to compile and
distribute XCSoar binaries for each localized version. A runtime
"Country" switch in the software wouldn't satisfy that requirement.
Assuming the IGC AH prohibition is still in place next year (and I
hope it is rescinded), this would be a step in the direction towards
reliance on sportsmanship if the US RC would allow a runtime switch
for AH.

Rob