@User: The "tech unlock" is there because there are some layers that are not supposed to be user-drawable, because they belong to specific devices with vendor-approved layouts, so that you can't use them in any "generic" way without violating DRC rules. My general policy in open-source software is that I don't prohibit the user from doing anything. I put in some settings that "discourage unorthodox use", but frankly, it's right in line with the goals of Google if you make your own "unapproved" device layouts.