Looking at this map two things I notice right away:
Norway is missing.
Wonders of Life Pavilion is missing... and is now "missing" again!
Communicore... I didn't visit in 1986 and I barely visit Innoventions now. It's just a good place to cool off (IMO).
Horizons and World of Motion. Two attractions I would LOVE to visit again. While I do love Test Track, I would like to see World of Motion again. I would much prefer Horizons to Mission:Space. What I would give to see the "real" Journey into Imagination again... sigh.
The Land- still my favorite pavilion! The Living Seas- now needs some work. I do miss Sea Base Alpha, but enjoy the recent Nemo additions for my son!
Really, not a lot has changed with the World Showcase. Obviously Norway has been added along with a few restaurants and such, but overall it's still as awesome now as it was in 1986.
Loving the "dinner show" options at WDW in 1986! I also still miss River Country and Discovery Island. If you are a photographer, don't forget to check out the photo tips for your 35mm camera and always use Kodak film! ;)
What do you miss from 1986 at Epcot Center?