If the solution is 'maintainers just need to do xyz', then it's not a solution, sorry. It's not scalable and which projects become 'successful' and which maintainers accidentally become critical parts of worldwide codebases, is almost pure chance. You will never be able to get all the maintainers you need to 'just' do xyz. Just like you will never be able to get humans to 'just' stop making mistakes. So you had better start looking for a solution that doesn't rely on humans not making mistakes.

"Discipline doesn't scale" as become one of my favourite quotes for a reason.