It is crazy that Melbourne got us to hand over basically more than has been given for a single player in a long time and Freo are still going to come out ahead comfortably. Jackson is just a one-of-one.
I personally would never want to push someone like Darcy out but think the idea the squad would be better with just Jackson as ruck is at least an interesting talking point. Jackson needs to be on ball as much as possible IMO, he can win games single handidly there. I hope when Darcy is back we get a bit more of a look at midfield Jackson to see if it works as well as him just in the ruck
From my point of view I think the best use of him is going to be as a roaming CHF who chops out in the ruck.
Darcy rucks and rotates to the bench with Luke or Treacy relieving.
After the ball is bounced Luke has licence to get on his bike anywhere between the arcs, and pushing into the forward 50.
Like a Koutafides style utility