This sounds like a good idea. I personally don't know much about either crowdfunding or how easy/difficult it would be to collect the data. I would be interested in hearing from anyone who has experience with either of these things though.
For example one question I would have is that I normally think of crowdfunding being for a one-shot project. This seems like it would have ongoing expenses like Wikipedia. How easy/difficult would it be to fund this project over a long period of time?