I'm working on a collaborative photogrammetry solution (think async/distributed 3d mapping from overlapping pictures) that shares data via IPFS.
Flattering myself heavily, I believe this sort of public-data consuming application fits like nothing else.
Your collaborative photogrammetry can be combined with the open and free species identification API and my custom OpenStreetMap data extensions and KartaView/OpenStreetCam/OpenStreetView to get more photogrammetry location integration and more free crowdsourced open data to add to photogrammetry. A demo of Seadragon/Photosynth [1] inspired me to work on this.
With pleasure, drop me a mail and I'll get back to you next week (last three letters of my username here @ rest of my username dot artificial intelligence).
I haven't put anything online yet though sorry!