Would you have said the same about Jarrod Atkinson? ...or Travis Colyer c. 2010 - 2012? Travis's turnovers used to make me turn green and bust out with rage. McKenna's got a decent short kick and he keeps running to create, but I don't know how much I could take of incompetent turnovers at half-forward. Must be patient I suppose.
Completely understand where your coming from and you're right, the biggest difference to me is that McKenna has genuine untapped potential who could reach extreme heights.
Atkinson was always a plodder at best and Colyer was average that showed the occasional glimpse of speed and talent.