if riot wants to make champions viable in more roles, i think garens secondary should become jungle

his villainy passive lends itself well to a jungler actually. he could go where hes needed much sooner in the game and try to stop snowballing enemies before they become too much of a problem.

instead of beeing stuck on the other side of the map, as a jungler he would have more freedom to go where the villain is instead of waiting for him to get further and further ahead until garen finally gets out of top lane or the enemy team starts rotating around the map to him because theyve already won the other lanes.

edit.: ive tried predator garen in the past, and its an entirely different playstile on him than what youd usually do with him on top lane, but works better than you might expect. you have to basically focus on hard pushing the lane and roam a lot into mid lane with the item active. if he was a better jungler overall, this would probably be the ideal keystone for him to rush into skirmishes to help his allies, and also to hunt down villains.