Please separate server function and communications in the on screen display, so that people talking are not so quickly rolled out of the display by irrelevant Join/leave etc information.
I would recommend moving all 'irrelevant' (to the player) information to a second text display area (i.e, the currently unused bottom right) so that calls for support etc are not rolled off screen by things that nobody really cares about.
i.e. anything that a human types should be on the left (for example) and system information should be on the right.
Currently it's 90% server related information that... frankly... nobody cares about, the 10% human communication gets lost very quickly.
(might also be worth tweaking the amount of time the text is displayed, Personally I feel it's a bit short at the moment, very easy to miss important messages just because you're busy)
So in conclusion, what people are saying left, server info right.