I haven't written off Shankland as a top flight striker, but until he puts together two or three seasons in the Premiership where he is comfortably into double figures I'm still unconvinced. When Craig Moore was his partner at Ayr Utd (and not injured) he had a decent goal return too. Likewise in his loan spell at Cowdenbeath. But he proved with us he couldn't quite hack it in the Premier League.
I'm also unconvinced he can play the high press, high energy game GA required from his strikers.