I think we've underplayed our hand with talls, since 2015 I think I've identified missed opportunities with Sam Taylor, Peter Ladhams, Bailey Williams and more recently Isaac Keeler & Will Verrall. These players are your bread & butter for trading & playing key forward roulette. In the case of Ladhams we could have significantly improved our draft hand in the event he was deemed a surplus requirement. Clarke has done ok with Balta, Miller & Gibcus but it's still unders compared to the Jackson era. As far as the Jackson era is concerned, I think he missed a few that I threw up but made up for that with players like Grimes & Astbury. Here's a list going back to to 2005.
Mitch Clark in 2005 (better than JON at least)
Jack in 2006 (and nearly smashed my car window like Frank when we traded pick 8)
Rance in 2007
Vickery in 2008 (although happy to have fixed that with the Bolton acquisition)
Ben Griffiths (poor pick in hindsight)
Sam Reid in 2009 (although I missed Astbury)
Darling in 2010 (at pick 6 which was fair value considering his underage year)
Membrey in 2012
Ladhams in 2015 (rookie)
Chol in 2016 (rookie)
Balta in 2017
Ben Miller 2017
Sam Taylor in 2017
Bailey Williams in 2018
** no picks in covid era
Josh Gibcus 2021
Isaac Keeler 2022
Will Verall 2022
I think you need to keep stockpiling, Jackson kept the pace up even after securing Jack & Rance, Clarke benefitted by getting a draft pick for Chol and securing Lynch as a free agent. As a strategy I'm not convinced this is sustainable given destination clubs struggle to remain in the frame for long periods. Geelong is the exception but many have capitulated like Brisbane, Hawthorn & West Coast.