This is definitely something I would never consider doing unless I've heard other people doing it, I would never want to be the guinea pig here.
And honestly, if I am financially clever enough to understand your value proposition then I'm probably financially clever enough enough to buy some downside protection on general real estate assets.
The most interesting value proposition here is the ability to predict future home prices, but if you could really do that you would be working for one of the massive real estate funds, for the same reason that someone who is really good at picking stocks will work for a hedge fund (and eventually create their own), that person isn't going to decide to give investment advice to a gazillion pipsqueak investors or manage the accounts of a bunch of little investors, even if they can easily automate it.
In other words, the ability to predict asset prices is something that it makes sense to keep as private as possible, not something to share with the masses.