Kindred can mark a target they want to. Why cannot Garen pick who is the Villain? Maybe nerf it's early game villain damage a bit and in return let you pick who you want as a villain. I don't think it would boost his lowelo rate too much and it would help him just a little bit in high elo, as a lot of players have said, that Garen is actually the worst champion when it comes to high elo. While at it, maybe let him get cd reduced on Q if he kills a target or gets an assist. This wouldn't necessarily fix Garen, but it would be a step to the right direction.