Though I'm not sure a system like this is much of a necessity, with applications like Discord or Skype being very popular with our community as a whole, it would be a nice addition for other purposes than just chatting with friends. It could function as an in-game hub for activities. A war channel would eliminate the hassle of searching for wars via war lobbies; a trade channel would spare most people from the item spamming in-game. I'm sure there are plenty more options, as well.
My only concern with this function would be that it could ween out irc, which is also a decent part of our community. That, however, may not be much issue, if we manage to make a tab that functions as well as irc on a moderating level.
Thank you for the idea.