While I understand part of your point, to be fair, DCA underwent very healthy expansion and redesign before the big Extreme Makeover began. It wasn't just Tower of Terror, World of Color and Buena Vista Street. It was a decade of minor and major expansion that would make any WDW park jealous;
2001 - DCA debuts with a huge THUD!
2002 - Flik's Fun Fair: 4 new nicely themed kiddy attractions
2003 - Alladin A Musical Spectacular (the highest rated Disney stage show in America)
2004 - Tower of Terror
2005 - Block Party Bash (the original, fully staffed California version), & Turtle Talk
2006 - Monsters Inc. Mike & Sulley To The Rescue, plus "placemaking" of Hollywood Studios area
2007 - Extreme Makeover announced
2008 - Toy Story Midway Mania & Pixar Play Parade opened (not part of Extreme Makeover budget)
2010 - World of Color, Glow Fest, & Paradise Pier retheme/beautification
2011 - The Little Mermaid, elecTRONica, more Paradise Pier retheme/beautification
2012 - Buena Vista Street, Red Car Trolley, Cars Land (3 attractions), Mad T Party
There's also a bunch of smaller stuff, like the Disney Junior Live On Stage theater show taking over the ABC TV restaurant, Who Wants To Be A Millionaire show coming and going, etc. But those are the major highlights from DCA's first full decade of growth, expansion, and redesign, both before and after the Extreme Makeover of 2009-12.
Now if DHS or DAK had that type of major investment over the last decade, there would be major excitement in the WDW fan community.