Not sure how you could quantify a players career impact short of looking at something like super coach points. Regardless, with the exception of Shaun Atley
not many duds play 200 games so I think it’s a reasonable measure.
You cited a few examples ranging from late first to third round picks but left out the vast majority of players taken in that range that don’t amount to anything. You would probably have to take 5-6 players in that draft range to find one player of the quality of Neale, Beams, Bolton or Rance. That’s a lot of draft picks for one player and there are no guarantees.
Rounding back to the original topic, this is why I believe the Taranto and Hopper deals were good ones. We gave up a collection of middling picks with marginal chance of success for two players that are near certainties to play good quality football for 100+ games for us. Your option of taking those picks to the draft has a very high chance of reward (2,3 or even 4 of those picks turn out to be good players) but also very high risk (one or even none of those players are any good). To me it was a no brainer, take the players because the draft picks are overrated.