What can Dunn offer as a forward? Contested marks, goals? If he can offer that then so be it - all well and good, but I haven't seen enough to suggest he will offer that. If you are suggesting Dunn will present as a lead -up forward, it will be along the same lines as Miller. I think Miller is more effective in this area and has the option of dropping deep into forward line to take a contested mark, or at least get it to the ground for a contested ball for our small forwards, IMO Dunn wouldn't be as effective in this area of his game.
I agree with you and Rogue, if he can hone his skills towards this he will be very effective for the team.