Rakan touches to help with objectives (Leashing and grabbing buff camps mostly)
's Q has a component that lets its healing proc off epic monsters as well as champions. A little improvement for him to help the initial leash and another for later drakes/barons would be helpful.
Have his Q proc on large monsters as well, letting him Q and heal the jungler during their first camp, and have his passive shield cooldown go down from hits on large monsters as well, to get buffs in the later game and take objectives later.
I guess there's a bit of a fear he might want to go into the jungle as a role with the latter change, so maybe just have that passive cooldown reduction apply to epic monsters.