Hey! First of all, this is the only official Tor community forum.
Someone recently proposed a pluggable transport here on the forum and as you can see, there’s not much feedback from the community.
I don’t know about the mailing list. If that’s allowed, then you’ll probably get more feedback there. But I guess having it on the forum here won’t hurt.
I recommend reading the post I linked, I included some info there that might help you.