JonesMacGyver Since these divisions would be totally unknown to the potential user
They would notice they suddenly have access to other posts they can't access before.And it is very likely they speak about it on another post,even if not wanting especially to tell everyone there is a part of the forum not open to new users...
And I think potential users can easily think they're not welcome to discuss with us.
Foxies An interesting proposal. However, it is a proposal that also incurs costs. The poor moderators (I assume they are volunteers) would have a considerable amount of additional work. Would they continue to volunteer for it?
If based on post count,or numbers of days since joined,it can be automatic.
Saintprudence
There is on every forum(for admins and mods,yes,@Angelina is right)!π
But no secret talks,most of these are known by other people here too,like when @Laura write an answer to a troll who use several accounts,or server outage.