Yes and no. Some things will be better and some thinks will be worse. Things that Eisner got criticized for in the 1980s, are now considered classics. People will forget the bad and only remember the good. Which means whatever bad thing people are experiencing 30 years from now, will be considered the absolutely worst thing to ever happen to the parks ever. If you try to convince them that Disney World once eliminated a free bus service, they will not care. That just seems to be how history works.
They will be fine.