You dont even have to push anything forward. Example Redhat's compilation of code or "forked" by CentOS, who were providing just a little more freedom. We all know how that ended.

Just keep in sync with the main project, and keep the annoying/proprietary stuff out.

> You don't get to stay in the club.

Or you become the club. I think LibreOffice has more club going than Oracle's OOo.