I reckon Trac is already one of our most important players, his explosiveness and zone busting long kicks into the forward line are real weapons. He's also a brilliant overhead mark, one out he will beat a lot of players in the air this season.
Haven't seen enough of McCartin to make a call on him, just hasn't managed to get himself on the park enough....but taking a shortish key position player with diabetes who doesn't display elite fitness and conditioning at #1 is a big risk.