I would love to help - but not from the technical end - nobody would want that!
But there might well be others in the community that would be interested - @AndySylvester ? @benwerd ? @adamprocter ? …and there are others from the 1999 world in here that - like me - remain fans - but unlike me - actually know what they are doing!
I also believe your buddy Doc Searls might be in a good place to think about building one in his IIW / VRM world - there is a group set up on Signal ( #ESC on Mastodon - not to be confused with the Eurovision Song Contest ) that is all about surveillance capitalism.
ESC = Escape Surveillance Capitalism - and has some interesting people in there.
I would argue one of the things missing is an agreed understanding of the terms that are used - not necessarily within the group - but certainly when someone writes something that gets read in the public domain .. too many assumptions about what each term may mean.
I guess the other consideration is to have such functionality working independent of whatever platform you are using to write on. (But you know that 😀)