Wow, this is all thoroughly well thought out and I like every single idea in your list... especially Morgan Freeman.What's sad is that classic Epcot Center can return to Future World. It could even be done with the use of IPs (thematically-appropriate ones). However, TDO won't be rational about including movies/TV shows into Epcot.
While World Showcase isn't in bad shape (just needs more attractions like the Rat clone and UK attraction planned in the near future), Future World needs that level of TLC.
- Remake of Adventures Through Inner Space, a Cranium Command-style show themed to Inside Out and a 'Making of Me'-style show themed to Baymax as a WoL revival
- A Muppet Labs replacement for Universe of Energy (hosted by Bunsen & Beaker, focuses on teaching about the general areas of science: chemistry, physics, astronomy, zoology, biology, engineering, etc.)
- Imagination pavilion revived with a new trackless Figment/Dreamfinder dark ride and a new show in the Magic Eye Theater showing how the combination of imagination and knowledge throughout history have helped (and can still help) pave the way to new horizons (essentially an imagination-centric tribute to Horizons)
- Innoventions West replaced with an EPCOT Museum (from Walt's initial idea to present day)
- Innoventions East replaced with a new quick-service restaurant
- Mission: Space overhauled (randomization, 4K graphics, real interactivity, planetarium show hosted by Neil deGrasse Tyson built between new WoL and current M:S)
- Spaceship Earth revamped with Morgan Freeman narrating, brand-new AAs and an actual finale.
- Seas pavilion redone as the Marine Life Institute (the dark ride now focusing on Mr. Ray taking his class on a 'field trip' through the Atlantic Ocean, Pacific Ocean, Mediterranean Sea, Indian Ocean and Arctic Ocean)
- General updates to Living With the Land and a Circle of Life replacement (no clue what a good replacement would be)
- Weather-themed pavilion with an EMV dark ride placing guests into simulations of tornadoes, hurricanes, snowstorms, earthquakes, etc. (between Land and Seas)
Meaning 'MK for grown ups' is likely to be Epcot's fate.