I agree that you have done a lot to make it visible, although I would argue there isn’t a “procedure” to change the requirements for the proposal process. The proposal process is about tagging questions.
From its wiki page:
This page describes the proposal process, which is one of multiple ways to introduce and discuss new tags for features and properties. The other ways are often undocumented. The proposal process was designed as a mechanism to document that a rough consensus exists within the community on how to model and tag a feature that previously had no established tagging. The open voting process acts as supporting evidence that the proposal author has adequately reflected feedback from interested parties and meaningfully addressed objections posed.
So while changing procedures is probably out of scope, this process is the best that we have, and it can show what the people contributing to the wiki think about the idea.