nice to have: test torrc for incompatible transistions of config values
Under Gentoo we do have a config check in the OpenRc script: "${command} --verify-config --hush" But unfortunately that will not catch the case where the config is ok but a reload will fail due to changes eg. from "SandBox 0" to "SandBox 1".
It would be a nifty feature to prevent a reload of Tor in such a case.