Guys - the solution to "building out the park" is not to add an off the shelf attraction to each area. If that's what the majority of the family attractions are, the kids are better off going to the county fair where they can ride those rides without the window dressing and at half the cost. What the park needs are family *attractions,* full on experiences - dark rides, boat rides, shows that don't involve killer robots. Disney excels at this, providing small scale attractions that flesh out the park's major attractions (many of which are fairly accessible to younger children).
Twirl N Hurl is a great addition because that half of the park desperately needed some kinetic energy, and nothing else could conceivably fit there (both practically and in terms of theme). But that doesn't mean we should throw a random drop tower, a swing ride, and a ferris wheel wherever we can fit one and declare the park "fleshed out."