The Yorick "Buffs" are in the wrong direction
He straight up needs a new passive. Currently he doesn't have a real passive and no amount of tuning is gonna make it a real passive. Move his passive over to his Q and start fresh with a new passive.
His E slow increasing per rank is pretty nice.
Now the maiden is where they really fucked up. Maiden will automatically leave you to go push a lane after 60 seconds which is horrible because this completely gimps yorick's dueling potential and you have to wait for it to die for the cooldown to start. However they did remove the cooldown on the max % health damage she does. My suggeetion is to keep Maiden control like it is on live and only keep the buff to the maiden's damage. I know it may be asking too much but revert the ghoul nerfs from 3 months ago that were supposed to "cater to Bronze 3 to Bronze 5", even though they gutted him at average and high elos