In the 30 years before Eisner, Disneyland was its own brand, and its movie-based attractions were 'way in the minority. In the 29 years since Eisner, Disneyland has become a marketing platform for whatever currently hot brand Disney wants to promote. Other than Captain Eo and Rocket Rods, every new ride and update has been a promotion for brands, brands and more brands.
Eisner's mandate was that Disneyland's purpose was to promote movie brands, period. It's a creatively lazy, risk-averse mandate that his protege and former lieutenant, his chief financial officer and his strategic planning executives are faithfully following.