Consider adding a bar to track the health of the mages in Ashran (Epic BG). It's a pivotal objective that is hard to track and a bar would be useful to report in chat. The reinforcement counter for Ashran is 150 and killing the Mage hits the counter by an entire 50 points. It should be just like tracking Drek and Vann in Alterac Valley.

Also consider the Ogre King brawlers health pools. Killing the opposite faction's ogre representative gives you an elite to fight for you. Being able to track their health would be nice as well.