Now if we can just get sprites to show up on top of a map... maybe somebody could write a plugin for the openstreetmap api or something. Good luck getting your hands on Nantek's crowdsourced geocoded landmark maps though.
I believe that is the hardest part of making Pokemon Go and I don't think that they will just share it. I was thinking of using googlemaps with their landmarks, and the most convenient way I can think of making it cool is adding a skin on the googlemaps to make it almost like smooth as pokemon go, which requires developing a plugin. That is a big problem for me since I don't know how to make C2 plugins.
Another problem here is the server. To avoid loses, I will try to test the functionality using Photon Cloud . I know it will be messy though.