Dave, you are right but relying on maintainers is not practical. Most of the criteria I have listed are quantitative. So with every release you go through them and the level of maturity is calculated by that. No new release of a packages without this step taken by who ever is interested in a new release. If you want to enforce release don't indicate anything and the maturity level becomes very low automatically. The OCT can define a threshold a maturity level is not allowed to fall below. What do you think?
You can not ask for a maintainer. This is open source and folks commit themselves if they earn money at the end of the day (at least on the long run).