The following tidbit comes from the Reddit AMA with Image & Form yesterday...
Now that Nintendo has embraced region-free publishing we save lots of time since we only need to submit one version of the game for the entire world (instead of multiple versions to cover all regions). It saves us months of paperwork!
We like the system being region free, and it seems like it's working out well for developers, too! Good to know there's less paperwork done, which means less obstacles for games to release!