Nice post! on the idea of what to back the currency by, it is clear that it needs to be utility, so I would probably say you take a system like HOLO where you create an ecosystem that requires the token as a use, transferring data, exchanging info etc. the coin would need to be used in the system in a way that creates value so if you were to develop it as a coin that is required to purchase or gain access to thing in the network or possibly a requirement for participation, and then you as mentioned stake the coins to further encourage use and value, which would provide some sort of a token that can be used in the system. The issue i have is i dont fully know what your ecosystem can fully do, is uses and capabilities so i couldnt tell you for what exactly to use the coins in this sense, but you would have to use them as a payment or requirement in the system to give it value. I would also suggest a PoC structured coin.