I think one channel that really should be added should be a channel where you are required to have a certain amount of BTC or certain amount of wagerred BTC to join.
Reason why is because there are too many newbies who like to spam the chat or post really childish comments or harass other members. I think if there was a so called "Pro chat room" then most mature and devoted Primedice gamblers which frequent it instead of the main chat.
If I recall I think there was something similar done with BTCe years ago, a private chat where only the whales could attend.
this idea was implemented I think at Primedice or at least was considered
I think they didn't go through with it because VIP room will not be very popular and half deserted most of the time
Stake has enough tools for a player to get rid of annoying newbies or passive beggars , there is this /ignore function and you can also close your pm for newbs
I agree that spam in general chat can be extremely annoying , but what do you expect when there are 1300-1500 players online, it is bound to happen