That would be quite a system when complete. And a great idea. I am sure there will be some interesting discussion here, on what would be needed.
First thing I can think of would be your own server control, and the need to have one that can be specifically used for you game, in this situating. Using it as the collection Hub of info, and the host to all the players.
Would need a dedicated team of leaders, for sure, for organization and server up keep. And keep order to the new users.
Yes I see 6 months of paper planning at least to get the idea sound. GG will have advanced all that much further by then.
But in time I do not see why this could not be done. They have acknowledged the need for MP off of the Steam servers, So when that arrives, you will be free to set up a pretty sophisticated system.
Next work on art work, and the way to read and wright data from text files, or a data base.
Should be impressive when complete. What are your views?
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