In AL's recent article: Bon Voyage? - MiceAge.com, he mentioned that the Subs are looking to be permanetly removed from Tomorrowland.
A brief recap of the history of the attraction:
The original Submarine Voyage thru Liquid Space attraction was built as part of the "new" Tomorrowland in 1959, and closed on September 9, 1998. At that time, Disneyland's president, Paul Pressler, promised the press and Disneyland fans that the attraction would re-open with a new theme by 2003. One of the first attempts to resurrect the subs was banked on the success of the 2001 Disney animated film, Atlantis: The Lost Empire. However, when Atlantis flopped at the box office, an "Atlantis" themed photo spot was placed in front of the lagoon and plans of re-theming the based on the film were shelved.
However, the attraction remained untouched. Later, the entire lagoon became a scenic viewpoint. The submarines were stored inside the show building without maintenance. Pressler left, and the attraction's announced 2003 return date passed without action. When Matt Ouimet became the President of Disneyland Resort in 2003, there was new activity in the Submarine Lagoon. Neptune, one of the original eight submarines in the fleet, was moored at the old Submarine Voyage station dock for inspection by Walt Disney Imagineering in 2004.
The submarines were being tested to see if new animated show scenes would be visible from the portholes. Rumors spread quickly over the Internet, saying that an attraction based on the Disney/Pixar animated film Finding Nemo was going to finally replace Submarine Voyage. After months of speculation, on July 15, 2005, two days before the 50th Anniversary of Disneyland, the Finding Nemo Submarine Voyage was officially announced at the new Turtle Talk with Crush attraction at DCA by Walt Disney Parks and Resorts President Jay Rasulo. The attraction was a huge success with fans when it opened, queue line times for boarding stretched to nearly four hours.
From AL's article:
It's no secret that the Submarines have no friends in Anaheim’s operations departments, where they are disliked for their inefficiency, very low ride capacity (800 riders an hour at full speed), and very high cost of maintenance. The Submarines have the dubious distinction now of being the costliest attraction to operate and maintain at Disneyland, and just the cost of replacement bulbs alone for the underwater projection screens can tally tens of thousands of dollars per month.
Now I leave up to us to discuss what we think should be the future fate of the Finding Nemo Submarine Voyage. BEGIN!