Tavares - clear # 1, I dont think theres much debate here
Schenn - clear # 5, again not much debate IMO
Hedman - yet to break out offensively. If he only becomes a pretty good defensive defenceman that puts up ~25-30 points? Then Kane/Duchene would definitely be higher. But if Hedman can break out offensively? Could merit that 2nd spot
Kane - I'm always hesitent to put a winger ahead of a centre. Centres are simply more important to a hockey team. But I love Kane's game. Really tough to distinguish between Kane and Duchene right now.
Duchene - had a down year. Not as physical as Kane, but offensively Duchene had two solid seasons before last year. Likely has a pretty high ceiling, but hard to predict. At this point I would probably put him ahead of Kane, but its close.