That's another very good point about the people transferring all over the esplanade. My plan would have caused a horrible gridlock situation. (See, that's why in a post-apocalyptic scenario in which you and I are the only people left not infected by the brain-eating virus that swept away most of mankind, you would be in charge of logistics.)
But yes, whose project is this anyway? I suppose that with almost the entire project being in the interest of private companies (Disney, Roland Garros and most likely the Villages Nature people), we're looking at a privately funded, outsourced, free service in the genre of the Pep's hotel shuttles. But then if you serve Val d'Europe and Bailly-Romainvilliers, you're looking at public transport, no? Which in France by happenstance usually means government funding that cities in other nations can only dream of. It's why Lille has a driverless metro and Birmingham has a rickety tram line. Although I have no idea what the current relationship is between Disney and the French government in that area. It's been a while after all since they sat down and said, "Alright, we'll agree to a TGV station in the middle of our resort, but you have to promise to put two little turrets on top to make it blend in!"
But it probably wouldn't be "our Monorail," no. And I'm sure the Roland Garros people would object to any sparkle-based liveries or old-timey streetcar looks Disney would have employed if it had been their project alone. But who cares, really? We're not going to get a monorail. Anything that's not a bus would delight me at this point.