This is a good post.
1)I struggle to understand those who don't

In all seriousness, it's pretty basic for us to connect to and pre judge something based on its brand. That goes for any product. Why does Disney build with IPs? Because Disney wants us to use our preconceived notions to help us connect with the place and gain hype.
2) Execution is important. You'll never find me saying otherwise. However, the power of brands holds significant sway over guests. Admittedly, RSRs has a much higher capacity than the Elsa and Anna meet and greet, but for months on end we saw higher wait times for Frozen than RSRs. Sometimes quality alone doesn't control consumer demand. Brands do. I also wouldn't discount Toy Story completely either. It along with its two other lands have boosted attendance at HKDL by around 50% if I'm not mistaken.
3) I'd rather they spent all that money innovating and building story around a next generation Space Mountain or some Tomorrowland E Ticket I've never even imagined. Wasting their time building a story around characters and show features that aren't relevant at all is a terrible waste. Think of the potential stories Imagineering could have created had they been unleashed from a pathetic IP. The Society of Explorers and Adventurers, The Ravenswoods, and Arbori prove they can do amazing things. Better than just about any other IP ever.
Update:I'd also say Anandapur too, that story is extravagant.
Update 2: Because I'm going to refrain from anymore posts, I'll leave these two quotes on why I wish Tron had been trashed.
A description of Adventure Isle: "The history of Adventure Isle combines lore and Disney imagination, beginning with the Arbori people, whose thriving civilization was founded on this island several thousand years ago. As the story goes, the island was discovered by a group of international explorers known as the League of Adventurers. Every corner of Adventure Isle offers guests of all ages the chance to unravel ancient mysteries, reconnect with a land lost in time and create cherished memories."
A beautiful story that follows and makes sense, one that will leave you immersed. Compare that to Tomorrowland: " They will learn that Shanghai was chosen by Sam Flynn as a location for the permanent portal between Earth and his computer world of TRON; that the United Galactic Federation selected Tomorrowland as the ideal location for their Stitch Monitoring Station; and that Buzz Lightyear chose Tomorrowland as his Earth-bound Star Command station for the recruitment and mounting of planet-saving missions."
That's why I wish Disney Imagineers had been allowed to create Magic.