Potential Yorick rework skills....
https://www.youtube.com/watch?v=7IDjmBfVZdk
So after watching this, it might be safe to say that Yorick will have a passive that spawns a generic ghoul every x amount of seconds. I mean, that nice and all, but I feel yorick has a lot more potential.
Instead of generic ghouls, Yorick has summons 3 of his dead friends. Because he can't quit let go of them, he brings the back to life, as a tribute to their memory because, he is the one responsible for them getting killed. He does this to atone being to weak too save them.
These summons are not just generic ghouls, but will have a whole look and personality to them. Each one may even look like an individual champ.
His Q can summon a dual wielding melee ghoul who has a dash while his W can summon a mage type. His E can be a support type and his R can be a co-ordinated gang blits attack which would include himself.
The idea is Yorick is a whole team by himself with 5 champs in 1. He will only be able to control 1 at a time while the ghouls can easily be deactivated by getting hit. Hence if a ghoul has been deactivated, it will not be able to participate in his ult attack.