if you really want to make yorick good late riot
it needs to be on his ghouls.
either you unshackle him from minion waves by the time laning ends, or minions get scaling durability so that the time yorick has to spend farming away from his team is well worth it
making E more powerful will just make him go harder into the 'second rate support' job he does after he falls off, where he just makes picks for his team with E and W instead of being a damage threat, especially when his ult is down. i don't play juggernauts to help someone else, I want to smash kids with zombies and shovels
and if he needs to better late his early needs to be less tumorous for anyone that can't jump out of his wall. at least fix the attack reset bug it has