Magic Kingdom wasn't as stagnant as you claim. Spectro Magic opened as a night time parade under Eisner.
Tiki Room was changed to Enchanted Tiki Room under new Management. Alien Counter opened under Eisner. The Magic Carpets of Aladdin opened under Eisner. Mickey's Toon Town Fair opened under Eisner. That land was first known as Mickey's Birthdayland and was opened under Eisner. Before Eisner created that land, it was unused land.
Buzz Lightyear's Space Ranger Spin opened under Eisner. Mickey's Philharmagic opened under Eisner also. Before that show opened, Legend of the Lion was previous show and was opened under Eisner.
My point is Eisner new lands and new attractions, but it seemed liked you didn't like what he opened. The 20,000 leagues under the sea closed and not replacing it was indeed a big screw up.