If anything, the alerts for the five minutes ending need to be greatly increased (if there even is any at the moment), to maybe a sound file playing or even a csay, rather than just stuff in the text box that can easily get drowned out by chatter. The Terrorist class causes a lot of unnecessary staff ticket traffic, especially when it's not known that there's a terrorist out and about - people just think it's another mass RDMer.
Perhaps its material could be changed to a bright solid material, similar to !revolt, after the five minutes have passed? That way, there'd be no mistaking them.
Additionally, people are clearly abusing the job and thinking they can get away with it, so it's clear there needs to be some change or stronger enforcement of the job's rulings.