I’ve posted the outline of a basic plan for the first “release” of an open-source snap store. You can find it here:
https://discourse.freetocompute.org/t/release-edge-1-bare-minimum/16
Also, I will probably stop posting here (about this topic that is) since I don’t really want to be noisy. 
Feel free to join me over there if you are interested in this!
cheers,
ft