Something like this? https://livenson.github.io/mxmap/
A few countries have those, here's a Github repo of the Swiss one (has a list of forks in there too): https://github.com/davidhuser/mxmap
We already have some privacy metrics in addition to tracking cookies, and there will be more. All are important at the same time.
This depends on how well the organization handles change and various complexities. Having great technical staff makes things easier, and throwing money at the problem can also help.
Just to give an anecdote: I've had people crying on the phone because their "solutions provider" could not get TLS to work on their www domain despite spending 5,000 euros or so.