Thank you for starting this discussion @xinbenlv as it’s an important one that I’ve seen come up a few times now.
I need to sit down and write out a longer post for this, but I think two places to consider for this are the following:
IETF’s process: IETF | The IETF process: an informal guide
Old W3C process: 7 W3C Recommendation Track Process
New W3C process: W3C Process Document
I don’t think either of these are cut and dry drop in replacements for the governance here, but I think looking to what others have done and understanding why they’ve taken things that way will help to inform the direction we as a community wish to go.
One thing worth noting for both of these process first off is timelines. In both cases, when someone undertakes the process of producing a standard in either of these places I’d expect it to take roughly a year at least to go from first draft to completion. Usually it’s a multiyear effort though which can take 2 or 3 years. In fact, I’ve seen some take longer and it’s only because WG charters were set to expire that a first iteration of a standard was shipped.
So with that said, I think a good thing for us to set as a guiding consideration here is “How long do we expect it to take from an EIP first drafted to an EIP being shipped and multiple implementations are relying upon it?”
In my opinion, I think a good answer to this is between 6 to 18 months depending on the piece of work you want to ship and how many parties are working on this.