Yorick is going to suffer from the same issues that Illaoi suffers from. If she's strong, then she's too strong, if she's weak, then she's too weak. Yorick has no reliable CC at all and his damage focused on 1 ability (His Q). As being an old Yorick player, I will say that new Yorick is harder to play, but they fixed absolutely nothing about this champion. You still feel completely worthless in teamfights and you fall off very hard in the late game. Plus, I really wish they could have kept his old concept of summoning unique ghouls that serve different purposes that you could control a bit easier rather than "Nasus farm ghouls with Q" and"hit your e or your ghouls don't do anything."
Now my other issue is why would you play Yorick now? Is it because of his farm with Q playstyle? Because if that's the case, you could just play Nasus, GP, or Irelia and get the same effect with a better late game outcome. Is it because he's a split pushing bruiser? Well you could again play Nasus or Singed or Jax and get the same outcome, but with a better late game. Is it because he can summon ghouls? Well Malzahar is still a champion and has a much easier time of controlling his Voidlings and has a much better kit than Yorick's in my opinion. Is it because you can summon a huge monster with your ultimate? Well you could just play Mordekaiser and get that same effect when you take a dragon or even kill a champion. Plus you can actually CONTROL Mordekaiser's ghost.
Overall, my experiences with him have not been too great. Most of the popular champs in top lane can just run up to him and bully him out of lane or can just completely ignore fighting him because in the later parts of the game, he will fall off. Yorick is like Nasus in the way that all of his damage is centered around 1 ability, but the thing is that Nasus has other abilities that help him utilize his 1 ability (Siphoning Strike), which also, in my opinion, is sort of anti-fun for the player since you have to last hit with Q and that's your only way to fight, as well as landing your e or your ghouls just go off and do whatever. Yorick just lacks mobility, late game pressure, and anything in his kit to really contribute to teamfights to really ever be justifiable as being a pick.
Also, if you are having trouble beating him, just pick anyone with a dash or someone who can just all in him early.