So to chime in again.
There are many drop rides, the drop is nothing extraordinary (the mechanics are, but that's something for us hardcore geeks), but the overall theme, the line, every detail in it, from the beautiful lobby (the details! like the Mah Jong board) to the gardens and the cracked fountain, and once you get on, the special FX in the hallway and the 5th dimension, that starfield before the doors open is also amazing.
Guardians is a great IP, but you can't just re-theme a 30's hotel into a space ride, it's not changing lights (as in space mountain), or an overlay into a ride (Nightmare does blend into Haunted Mansion), it's a totally different thing.
If anything, I see Guardians taking over some empty space in tomorrowland, being an overlay into Space Mountain, heck, overlaying it into Aerosmith would be cheaper and make a ton more sense, the building itself is a damn cube with little frontage.
Imagine the Aerosmith ride with a Guardians overlay, build up a nice interactive line and launch people into a wild chase, make it "Escape from Knowhere" or "The Thanos Heist" or even "The Battle of Nova Prime", add fancy effects to a ride that's pretty much blacklit wood at this point.
ToT is the cap to a beautiful street, and has become the unofficial symbol of the park, as it is the only towering (pun intended) structure now that the Earful Tower is gone.
DHS will become Star Wars land, but leave the streets and the Tower as they are, after all it's probably the last attraction done with such care and and a broad appeal. New Fantasyland was made as Princess cash grab for mostly girls, Toys Land is for kids, teens and adult need something that speaks to them, and that's where Pirates, Haunted Mansion, Big Thunder, Mission:Space, Spaceship Earth, Test Track and Carousel of Progress come in. We already lost Horizons, The River of Time, Universe of Energy, Maelstrom and Alien Encounter.
Walt Disney was a genius in that he mixed some peril, adventure and yes, danger, along with the sense of hope and the overall reassurance that the parks give you. Every good story has some of this, it can't all be rainbows and puppies. After all, hope and happy endings come after a struggle and some risk.