Cole, your central idea about the Arthurian Obi-Wan/Anakin/Padme love triangle was one I also wrote about in my piece on how I'd have approached the Star Wars prequels. Not sure if you've seen this, but it might interest you (despite what you say about not wanting to hear about any other fan iterations of the prequels). Great article by the way. :)

How I’d Have Written the Star Wars Prequels | Cinemania