Can we have some upgrade/update on proxy capabilities of ssh3 ?

I want to know what is the current state of being able to use ssh3 as a tunneling service ?
my own use cases is that i want to use ssh3 as a way to access my ephemeral shells using nix and i want to see if ssh3 can do forward / reverse/ dynamic and any other proxy methods might be available .
and i want to see if i can route my wireguard packets using ssh3 ? (seeing if i can leverage quic based transport features of ssh3 for wireguard and udp packets)