ohault Howdy. Thanks for sharing all this. From the SMB side, we reply on the MS QUIC team here in Windows for much of the transport story specific capabilities (the same way we do for TCP), so I'd definitely recommend engaging with them directly. They are very eager for feedback, we work with their PMs and lead Devs constantly.
That said so, I still want your feedback on the SMB aspects and if the SMB over QUIC implementation needs further options for you to use it (for example, a proxy gateway/forwarder you mentioned before is part of our roadmap). We do support SMB multichannel in QUIC scenarios, we also support the new SMB compression options, but there is plenty of SMB over QUIC v2 work in my roadmap and I've love your thoughts on populating it.
I'm going to read these links you shared, they look very interesting. Thanks!