Shifting some power of Yorick's kit to himself

As the title say. I was thinking of an idea on how shift some of yorick's power towards himself instead of it being so invested on his ghouls. most of the time yorick has a problem with dealing good damage outside his ghouls and maiden so I was thinking of a few suggestions on how to shift that power without breaking him. First of all he needs some extra utility because if he is not dealing damage, he at least needs to offer something else to the table in a teamfight like more disruption when he is the thick of things. Anyways here are a few examples what I think should be changed on yorick.

Ghouls: Increase their base damage by 4 at Lv 1 but reduce the ad scaling they get from 30% to 25%.

Q: Now also deals 4% of the targets HP extra true increased up to 6% true damage based on missing HP and heals yorick for 5% of his missing HP (increased to 10% of yorick's missing if Yorick is below 50% Hp) if he hits a champion in addition to his current heal from his Q if he.

W: Now grounds the target for the duration or until they can destroy the wall. mana cost is also increased by 10 at rank 1 + 5 per rank costing 100 mana to cast at rank 5.

Maiden ult: deals less damage (8/16/32 +45% AD)

All of these changes would be to increase yorick's own power while also giving his Q that feeling that he is performing your opponent's last rites before giving you the shovel. In addition it also gives yorick some extra sustain to survive the laning phase or even give him some dueling power so he can at least stand his ground more often instead of needing to get ghouls to feel safe. With his wall now grounding his target, it means that they have to dash out of it before it rises, allowing him to punish a failed dash but also forces yorick to be careful of using his W unless he can wall in his target can tag them with his ghouls. otherwise it is just too punishing to use.