Not that much from Scratch, what we did is, We made it open from the very beginning and that worked out. It was awesome to see many unknown people working to build it :)
I am unknown about Argi project but yes I also feel the same, making project sustainable with clear contribution guidelines is something we (FOSS Nepal) as a team are lagging nowadays. Hope we can work on it.
Regarding giving structure to FOSS Nepal, I tried by working in the
concept of Person of Contact years ago but had already give-up upon it. But the suggestion and guidance of sir can be helpful in this.
Regards,
Nikesh