Most people who spend any considerable time on Twitch don’t even use the default chat interface (BTTV mostly, and Chatty), so that’s kind of a stupid statement.
If Twitch would actually build something meant for its 3rd party tools instead of just for their own features, it would be a gain for all of us, including Twitch’s users.
EDIT: That doesn’t mean the particular additions brought up in this thread necessarily have merit though, but other additions and changes might.