Please just create a BraviSEAmo show for EPCOT !
In terms of technology, the Tokyo resorts set a very good example. TokyoSea Fantasmic and the Tokyo Disney Resort's DREAMLIGHTS are amazing. For EPCOT, I would love to see the lagoon shows from TokyoDisney Sea.
The Tokyo Disney Resort, continually changes the shows and parades to give people a reason to come back. Yes, I understand those parks cater to the local crowds and the belief is they *need* to frequently change the offerings to keep the crowds coming back - at 70 bucks for a one day ticket by the way. This admission also includes the Halloween and Christmas events. Events that the Florida park charges extra.
That said - I would argue the yearly committed visits of the WDW's DVC crowd is enough to justify a frequent schedule of new offerings. I mean, the MK castle show seems like it is revised most often. I know WISHES has been around awhile but the insertion of seasonal flavors of the castle shows make it feel updated.
The last real exciting entertainment I experienced at EPCOT was the Tapestry Of Nations in 2000. What an emotional and touching parade. I loved how that night parade gave World Showcase such an intimate feeling. Nothing since has been achieved. Simply gorgeous.