But would they replace the American Waterfront and Lost River Delta "ports?" After going though all the links (thanks everyone), DisneySea would definitely be an "added attraction" for a day or two for me, but only if it had differing sites...the park itself reminded me of a blown up version of the Storybook ride at DL.
First of all, WDW already has the American Adventure, Dixieland Square, POR, POFQ, BC, YC, Boardwalk, etc., plus, NY is way too close and accessible to build a Disney-version so close by. Now if they would replace those two lands with something along the lines of a Colonial Village (though people have been clammering about a Colonial Resort for years and see how far they've come), or a few more "classic civilization" ports such as - a Sumerian/Babylonian/Egyptian/Alexandrian setting; Renaissance-era; or an ancient Oriental/Asian section - I think many people would view it as glimpses of mythological history (sterilized and archetyped) along with the other Disney "myths" already incorporated into DS.
Admittedly the problem is still the money Disney, Inc., is willing to shell out to build a quality park. If it really would cost $5-$6 billion to build a DS-type park, even if its attendance is second only to the MK, it would take in less than $1B a year and with its cost to operate it would take Disney, Inc., over 20 years to break even. Don't think any short-term president would approve that project.
Truthfully, I think Disney is going to keep building smaller and smaller parks - about half way between the size of the waterparks and AK/MGM - so people will have to spend more and more time being transported between places they want to visit, and thereby forcing them to spend more time overall at WDW if they want to visit everything.
-R