Could there an issue with having two lefties as small forwards? Probably the preference is for a lefty and a righty for balance, but Crozier and Walters have gone ok before - notably in the win against Hawthorn at Subiaco last year. Also thought Crozier showed a bit in the final against Port.
Obviously not Duffy because of injury. Langdon too lite, only recently returned from injury. Grey offers pressure, tackling, but that would be like having DeBoer Mk2 up there, and I have doubts whether that defensive forward role gives the team much.
Weller seems the best bet, but his inclusion would probably have to come at the expense of shuffling the team and dropping another lighter bodied player like Sheridan or Crozier from the team that played Carlton.
I suppose if its two lefties they go with, D.Pearce could also rotate with small forwards and someone like Weller or Blakey could come into the midfield.
Realistically though, going on past selection the most radical thing that will happen will be that a new player might get the subs vest.