Let's see what they have done so far...
After opening, oops, we screwed up the Marketing, and brought more Disney Characters to the park.
Shade in queues, oops, they had to redo the Soarin' queue to add it....
Then we got Millionaire (but of course, wiithout the Pre-Show they offer at WDW), but that was closed last year....
Closing down of restaurants and food stands, lost of major sponsors (Wolfgang Puck, Robert Mondavi)
Shutting down of Superstar Limo less than a year after it opened.
Then we got Flik's Fun Faire, nice themeing, but the rides are lame, one kiddie ride with a height restriction, and another that takes longer to load than to ride (Hemilich's)
Replacing Soap Opera Bistro with Playhouse Disney.
Bringing in ToT Lite, but still many guests do not want to ride a high thrill drop ride, looking for a family ride that all can enjoy together.
The special summer events, Music (not "concert") series, X-Games event, etc. Alll things that didn't really help the park.
So far, what they have done at DCA has not been a fix at all, so based on the track record... the answer to the thread's question... No!