I know yorick R needs a buff.
his r cannot split push a lane, if you build full tank it is tanky but does no damage so tower doesnt care it just forms a wave, if you build full damage it will take towers but then your ult is all you are, and besides for your ult to be viable in a split push you need to be around lvl 16 with nearing full build which for an early game champ is sad, i think yorick needs more damage thrown onto his early game ult, hell if i ever play the guy i jungle and just use it to farm all game.