I think this is a great idea. But I would caution making it too structured. In the business world, you very carefully "start" something. Because the only thing that will ruin a good idea is starting a good idea and having it fizzle.
I would like to think of myself as a good ambassador to new members. I would like to be on the "committee" but cannot make any promises to do much more than what I already do. My non-YT life does sometimes get in the way of my YT life

and there could be periods where I'm not able to visit much. I never volunteer for a job I can't put 110% into.
I would like to be "in the loop" of new members though and promise to continue bumping (many times by replying) uncovered missed threads.
One thing that I would like to see is more people put their personal name clearly in their signature..... or at least those who like to be called by their first name. Some new people do have their name in their signature, but I'm always a little afraid I can't tell if it's their name or their dog's name

. Personally, I don't mind being called Diane/Coby/For My Coby/Hey You. Using first names sometimes helps you feel you know someone, but there are so many people to keep straight by memory unless you've met in person, known a long time, etc. I think it might be intimidating to see others calling each other by their first names and not be able to join in. So that might be a suggestion for our new members.