These are amazing ideas! I love that you have brought data to back up what you are seeing! I am going to loop in some of our PMs to this coversation as well.
You have just made me very, very happy!
It can be exasperating to look for a solution and instead find an idea (especially one submitted by a Zen Master) that has hundreds of votes but no resolution. And then Tableau releases a new version that includes ideas with <20 votes.
PS I would love to have access to get under the hood of this viz - maybe publish it to Tableau public?