All the set dressing of the Hydrolators, Sea Cabs etc may have been technically superfluous from an operations standpoint, but they were vital to the overall show. What made The Living Seas more than just an aquarium was the fantastic, futuristic notion that this was an underwater research center, and the journey you took to get there. That implied sense of scope beyond what you could see made it all the more fascinating and inspirational.
A Finding Nemo aquarium naturally feels geared more towards younger children, and not enough to differentiate it from the newer, larger and more sophisticated exhibits built in the years since 1986.