First of all, as someone who lives in DCA country, understand just what kind of discount they are using to inspire people to come to this park. If you can show proof of residence from Central California to San Diego zip codes, Adult tix cost child price and kids get in free with every paid adult (so basically one adult and one kid can get in for something like $36). It's quite a deal, but it's still not getting THAT many people into DCA.
The park is a botch job--total arrogance on Disney Brass' part, thinking that they can put Disney on anything and get attention and customers. That's why ToT is now on fast track. They are also trying to solve a lack of dark ride situation by figuring out what to do with Superstar Limo. As it is, they are desperate to spike attendance and turn DCA around.
As far as next WDW attractions go, I'd put money on Soaring Over Japan if the rumor about an existing show building behind the Japan pavilion is true, particularly if it is indeed convertible to a Soaring attraction. Disney needs the cheapest and most intelligent "fixes" possible, and this one is probably it.
Face it, Epcot's attendance sucks as well--they haven't drawn a steady flow of guests in about two years. And with Mission:Space followed by Soaring
possibly opening back-to-back, that would at least solve Epcot's situation (in 2004 or 2005) at about the same time they open ToT at DCA. Because people would return to Epcot for these rides.
Out here, DL is supposed to be getting some kind of rennovation face-lift by 2005, although nothing has really been made official (other than the need to truly fix some ancient technology in PotC). It wouldn't surprise me if all we get are 50th anniversary shows and parades.
Which brings up the remaining parks. Yep, they need another "draw" at AK. I think the earlier rumors and semi-official statements about an E-ticket attraction added to AK are just that--one new high-tech or coaster ride, probably added to Asia or Africa.
BK is probably a "back-burner" situation unless Disney chooses to bite the bullet financially and go forward with it. This might not happen until all the other stuff at DCA and Epcot gets completed and/or if Disney purges a few of it's other loose ends. Out my way, there's been talk for quite a while that Disney desperately wants to sell the Anaheim Angels baseball team. Then again with the Angels finally having another great season, people are flooding to Edison Field for the games (averaged 30,000 fans for this last 6 game homestand), which makes money for Disney--the old Catch 22. So go figure.