Many that contribute due not want such an update to the work they own without reviewing the new licence to see if they agree. Another solution which other pro

Many that contribute due not want such an update to the work they own without reviewing the new licence to see if they agree. Another solution which other projects use is a requirement that it be licensed to that project, and that project alone as permissive, which has no greater risk than assigning copyright to that project, the project can now relicense the code as it sees fit, but one continue to owns once work and one is free to license it to others how one sees fit, including not at all.