Woohoo! Yes! So happy you posted this thread Tyler. Now I can rant about JII AND... The Tiki Room. Here is my opinion on what should be brought back from those days in WDW or just back in the old days-
EPCOT-
Old Journey Into Imagination (maybe a little merge with some effects in the new ride) and the Old ImageWorks (a possible refurb of the upstairs area)
Horizons (Don't feel the need to go on Mission:SPACE. Demolished or not, want it back!)
Old Universe of Energy (While I LOVE Ellen DeGeneres, yeah, the ride seems boring to me)
The Land needs to refurb some rides (Soarin' and Living With The Land are awesome, but there is another attraction, maybe two in there, that could be used for something more popular)
The Seas (I heard about the old version of the Seas, without Nemo, and it sounds cooler, like a flash from the past 20,000 leagues under the sea)
Gran Fiesta Tour (I love The Three Caballeros and Donald Duck, but maybe they should step back and just be M&Ging out front)
Wonders Of Life (Bring it back. It would make for big buzz and a lot of people miss the place, so need it back)
Magic Kingdom-
ExtraTERRORestrial Encounter (I heard the effect of the new Stitch version isn't as "Wow!" as the original, so bring it back and just be wary of younger children)
Pirates of the Caribbean (They cut out so much of the original attraction in
Disneyland and I think that should be fixed)
Mr. Toad's Wild Ride (Though I heard it really wasn't that great, I think an updated version would be quite nice)
20,000 Leagues Under The Sea (I know it was a matter of budgets, but my dad talked about this ride, since he went when the park first opened as a kid. He isn't a Disney fan and if he remembers THIS it must be epic!)
Haunted Mansion (I heard it was a bit more eerie back then. Maybe bring back the pop-up ghosts in the attic. That would be great)
Disney Hollywood Studios-
I think this place is fine, just needs to add more rides and get rid of some, but its mostly fine.
Sounds Dangerous! (Bye-bye! Just go and make room for something better)
Streets of America (Needs some more pazzazz, give us that!)
Parades (Stars and Motorcars really was about DHS and fit with the theme, but Block Party Bash could be a secondary to that)
Animal Kingdom-
AK is fine as well, but I think because its so new, it needs time to evolve
Tarzan ROCKS! (Heard this was a lot better than the Nemo show (which I enjoyed) but I think this sounds more my type of thing)
DINOSAUR (Just change the name back to Countdown to Extinction and I'd be happy. The Dinosaur movie was a Disney movie fail on so many levels. I love the ride though)
That's all I would say about bringing back old qualities of parks.