It’s great if you can get some progress here. But correct me if I’m wrong when assuming that you basically rely on LibP2P taking care of this stuff? As the AutoNAT from LibP2P just keeps on being “almost there”, as it has been for several months, have you considered maybe hiring some more workforce to contribute to the networking side of things? It seems to me that the networking relies too much on the people outside of this project.
I also need to ask why the upnp got implemented just a couple of weeks ago, considering it was included in LibP2P in last autumn? Now that I see how well it works for many people, I feel all the more 
for having to go through that manual port forwarding stuff for so long, when it was there to be had all this time.