I don’t know much about English, and I don’t know what Bondy’s spreadsheets say, but I wouldn’t be using a top 10 pick on a ruckman. If you look at elite ruckmen, very few come from top 10 picks. Below is a rough list of All Australian ruckmen from the last decade. Only one of them was a first round pick and three were rookies. I'd be more inclined to take a few flyers at big coordinated blokes at the end of the draft, and try and turn them into ruckmen.
Gawn – pick 34
Goldstein – pick 37
Sandilands – rookie
Minson – pick 20
NicNat – pick 2
Cox – rookie
Jamar - rookie