I love it when they chase me around. All the more fun for me to knock them back into traps, lead them around the map letting them provide no value to their team. I'd like to think the majority of people who chase aren't the type of players who know how to use their class rotation anyhow, and hardly end up being anything more then a minor nuissance. Worst case just wait a minute and reque or change jobs, they'll be out of your queue rotation.