Garen will never be complete until his passive is replaced with an in combat regeneration
The idea that a juggernaut can be given out of combat healing is contradictory to the juggernaut design.
Garen doesn't have the tools to be able to disengage reliably at all, and most of the times garen would rather not because he's tanky and has decent AoE damage ontop of his newfound shred utility.
You must replace his passive riot, it just doesn't work for him and serves to only keep him down.
- man who just wants to serve justice without feeling horribly gimped by a self-contradictory juggernaut design