Anytime a web page is created, design decisions need to be made which balance things like the usefulness of screen real estate, page load time and back-end server resources.
There are 12 different DVC resorts, each with up to 5 different villa sizes--more if you consider lockoffs and dedicated separately, not to mention the 2 Queen, 2B at BCV. Then you add views, which number up to 4 per resort. AKL even has two different buildings.
AKL alone has over two dozen combinations given:
- Jambo / Kidani
- Studio, 1B, Dedicated 2B, Lockoff 2B, Grand Villa
- Value, Standard, Savanna & Concierge views
Displaying all possible results on the screen would be confusing to readers. It would also require significantly more server resources to render the page--instead of just showing results for 4 possible combinations, it would have to run the calculations on dozens more. And it would take more time and bandwidth to push all of that info to a user's desktop / tablet.
While some members may want a (figurative) bible of information with every search, I suspect the vast majority are satisfied with a fast, limited response. There's no reason to complicate every single search in the interest of a few who may wish for full disclosure.
Disney IT may be a target for much criticism but the online points booking has worked pretty much flawlessly since Day One. With regard to design decisions that were made, there's simply no "one size fits all" solution for webpage layout.