UAL DS,
I've been repackaging Lightroom with Composer as well. My concern about local user .plist files is deploying to labs where the machines are on Active Directory and create mobile accounts on the fly. Most accounts won't exist at installation unfortunately. Do you know if Users/Shared/default can suppress the region/license screen entirely (without those .plist files)? Or is that not possible? I'll test it too but curious what you might know.