How about a hunter/ predator agent that can see the footsteps of rotating opponents , so outside spawn area, that glow brighter if they have been there recently..then in a 1v1 situation fear kicks in to the hunted and their vision goes red with a very tiny visual impairment while being hunted, also could have a leap to shut down a distance down but only when hunted is far enough away for them not to take a huge advantage.
He could also carry 2 guns on an abilty, like an Odin and an awp so when he gets to a sage wall he can blast it down..or if he gets caught out in spawn he can spray the enemy down and hold them off.