All I can thing is surprise on the sky 2.0 or Tapestry of Nations 2.0
I thought of the same thing with Tapestry of Nations sadly the drones would be to close to the guests though. Maybe it could work in the lagoon though! Actually it's funny when they first announced the millennium celebration and tapestry of nations, before knew it was a parade, I envisioned the puppets dancing around in the lagoon.
Well the subtitle these Illuminations replacement rumors have been using for years was called Sky Dance. Doing it as a Tapestry reboot mixing drone puppetry and the bag of tricks they've developed for World of Color and Rivers of Light could be spectacular.