I've actually sent in a suggestion to have an IRC gateway to the in-game chat (or enough information to program a bitlbee plugin).
As I'm now a CA, I keep GOIO open to keep an eye out for people to help, even though I'm not playing. However, as you said, the in-game chat lacks a lot. For example, timestamps (I have no idea how long ago the question was posted), logs, out-of-game notifications (PMs, name mentions) etc. Also, GOIO is fairly heavy, maxing out a CPU core, keeping my GPU running because of 3D backgrounds..
I haven't heard back yet though, probably due to the holidays coming up.