Magic Kingdom:
Penny Arcade Hardly an attraction- can do this at home now
Main Street Cinema Did this actually show movies? again- can do this at home...
Davy Crockett's Explorer Canoes I had to look this up- closed in 1994 in the Magic Kingdom... ok if you wish you could ride a canoe I guess I'll give you that one
20,000 Leagues Under the SeaI never rode this either... heard good things
Keel Boatsseriously?
Sky Way (and yes, I get that you can't replace in same place, but...)
Mickey's House
Minnie's House
Donald's BoatI would rather have the new incarnation than the old incarnation of Toontown- you can't complain about the new things they've done and say you want the old things back
Circle Vision 360Talking about timekeeper? they did replace that with MI:LF, I prefer MI, I although I enjoyed both shows
Epcot:Future World needs love I agree
Kitchen Cabaret miss it too- however, wouldn't it be located partially in the Soarin' attraction?
Wonders of Life Very sad- I miss it lots
Journey into Imagination 2nd floor; (Insider Rumor) Journey into the Imagination will most likely be closed for a long rehab, but never reopenMiss it too
Many of the street performances have been cut (permanently or just back)IN all fairness they have added things like F&W and F&G that were not there at park open that are loads of fun
Disney Hollywood Studios:
Cut backs on street performers
Cutback on Studio Backlot TourTrue but I'd choose today's E-ticket combo of TSM, RnRC and ToT over the original MGM studios and just the backlot and GMR anyday of the week
Animal Kingdom:
Pocahontas
Discovery River BoatsYou really like these boat rides don't you?
Lucky the Dinosaur (although in all fairness, that was temporary)
And, while it shouldn't be a permanent close, we will be missing Lion King for quite some time.If you want WDW to build new rides, sometimes things will have to close to be moved around
DAK has also had Everest and Nemo the Musical open that were not opening day attrations (DAK at park opening was horribly boring IMO)
I'm sure there is more, but it is all I can think of off the top of my head.