Excellent question and idea but as far as I know this isn't possible.
This might work for some cities, but wouldn't work for others. For example, in our city (and for many, I suspect) most of the "high demand" dates shift around by a day or two or a week or two every year. High seasons might stayroughly the same year-to-year, but not music festivals, Formula-1 races, tech conferences, and so on. That's probably why AirBnB has ignored the capability you ask about, but the fact that it wouldn't work for all doesn't mean that it wouldn't work for some. Try contacting AirBnB with an "enhancement request".