What about a search motor wich can find information into thoose mailings ? This is not a "solution" but this is a way to make the users able to find information.
Original messages :
Ever met a developer who likes writing doc? :)
and a lot of the docs have never been read by a developer. That being said, using FlaggedRevs we might be able to deliver more solid docs on MW.org by flagging docs at like two levels. One could be like a basic "has been looked over for glaring errors and basic readability" and a second could be "has been thoroughly reviewed and is considered the doc on the given subject."
Perhaps we could start by getting developers to thoroughly review documentation?
You're proposing a technical solution to a people problem. The problem is not that the site can't display the fact that a developer vouches for the quality of documentation. The problem is that there are no processes for getting developers to review documentation and vouch for it.