We are not planning to open source it, but who knows what the future might bring.
I too love and appreciate open protocols and tools, heck, I also tend to gravitate towards that by default as well, but when something better comes up that's not open source and I can use it better/easier, I do.
We'll release a CLI for Windows, macOS and Linux which will easy to use and flexible/scriptable so you could use that to hack together anything you need.
You definitely are a power user. While I don't disagree on the P2P/privacy overlap with open source I do think the world has yet to have the final say about data transfer. Yes, literally countless tools and methods of moving data exist out there, but they aren't universal (AirDrop/Quickshare don't work between all platforms), they pretty much always have both random limits, and limitations, and in most cases aren't really efficient nor pain free -- we're trying to do better, hope we make it! :)
Stay tuned and if you or anyone else would like to give it a try in the mean time drop me a line, m <at> zynk.it