I’ve read both blog posts regarding Magic Transit. I see that the current requirement is to use a GRE tunnel to move traffic to the client’s network.
Are there plans to use Argo Tunnel in place of the GRE tunnel?
Also, would it be possible to interconnect via MPLS?
 Yes, I understand the userspace / kernel-space tradeoff, but there’s something to be said for the automagic configuration via
cloudflared CLI options. One could even see
cloudflared setting up the GRE tunnel and pushing the desired configuration up to CF.