Aish is like a yo-yo in my rankings. He's class but he's very outside. Whether it's due to injuries is the question. If it is and he can go in and win his own ball fully fit then he's a top 3 player for mine. If he's just an outside player then he's a borderline top 10 pick.
There were also similar things said about Heppell when essendon selected him but we must all admit that he has developed his inside game well, Aish is miles ahead of where Heppell was at the same age and whilst he wont become a monster inside midfielder - He will develope to a similar level atleast of Lids imo