Read the whole thing. Very technical and very detailed. I personally cannot follow it all but thank you so much for writing it for the plebs as a summary! Tons of links and things to research later... I personally liked this part:

"There is a good argument that we should get additional operational experience with Lightning and its approximately 1-UTXO-per-user scaling, before pushing the limits even further with UTXO sharing schemes." Makes sense to me! +1