For several years, as a Moderator attening the Moderator meetings I have asked Randy and Internet Brands for a tool that would tell Moderators when a member posted in their forum for the first time.
This hasn't been delivered yet.
It would be great for Moderators to know when someone posts first so that they can welcome them and give them some background about the forum.
In the wider welcome arena, I'd like to see one or two volunteers to welcome new members as a general idea. But forum specific welcomes seem a way to go to me.