Thank you all for the responses, perhaps I didn't phrase my question properly. I understand why the fall is popular, and I'm not sure the lower points are as much a driving factor as is peoples desire to escape somewhere warmer when most of the country gets colder--I guess it's a chicken-or-the-egg thing, and that's not really my question.
My question is, why are the points at the end of April treated as a peak season when clearly it isn't; one look at availability shows that less than 2 months out you can stay almost wherever you want. So are the points allocations not dynamic enough? I would assume this is a carryover from years past when Easter fell later in April? But this year most breaks are done by April 8th, and after that rates at most resorts react accordingly.
One look at another timeshare rental site shows that people are giving away weeks at the end of April. But DVC is charging a premium for a week at WDW when very few people are coming. I just find it curious. I guess the response will be, "do you want them to change the point allocations yearly?" Well, yes I guess I would, because treating quiet times like the week I'm referencing like it's a holiday (points-wise) surely dissuades others, and drives more traffic to the lower points seasons.
I guess I would agree to an extent with the poster who said to make all weeks the same. I would amend that by raising the points for certain weeks, maybe Easter, Christmas, Thanksgiving, etc..., but realistically the spread doesn't make sense. There's little argument to be made that (in DVC terms) the end of April will be busier than October, but it's priced like the demand is 25% higher. Odd. Does DVC actually want rooms empty for entire stretches because they've priced owners out? Because in it's simplest terms, that's what they're doing (as dictated by availability).