Garen Rework

Giving all the champions a really unique reason to bring them into a game is coola nd all, but... why does the rest of Garen's kit have to be tweaked? Can't he get the new mechanic and then get follow-ups later if he's still too weak or too strong?

He can chase down villains but with less MS on his Q it seems counter-intuitive to that intended gameplay pattern. I really don't care about spinning faster and it seems like just random complexity added onto his kit.

Lower defense early-game seems like a fair enough trade off for the new mechanic, what gives