Personally, as CC goes, I like the chat interface they have for Pro subscriber Advisors. BUT, I wouldn't want it on public channels simply because it serves no purpose. The forums are where we can discuss matters publicly without an endless list of injections. When chat is between two persons, it is covalent for lack of a better adjective. There is a bond between the conversants. That, I like about the advisor chat.
Something like that on a member to member basis would be viable, one supposes (not that I know dick about this) and it could even include an invite option to conference. A little more backroom than this forum needs to structure for, imho. It's a MOOC forum, after all, not a full blown public forum in the normal sense. Topics are largely confined to lesson exercises. For this, the forums are serving sufficiently well, and improving as we all get our sea legs.