Its been so long to your post , but I wonder where have you reached with your idea.
I am looking for something similar, but not just replacing the name from group to project. Can there be any drawing tool, so that we can just draw and share.?
anyways if somebody come across again,this plugin can be helpful :
Looking for kind of similar solution, but i dont think that there is any such plugin.
For such purpose there must be some custom functionality, or multiple buddypress plugin installation,
don’t know that i can be possible or not, but seems to be a solution.