I think that's an
excellent point. Combine the lower cap cost of later picks, the lack of consensus after the top handful of picks and the contract thresholds, and you should get a near plateau approaching #16, then a sharp drop at 17 with a deceleration to 32, then another drop.
The best cost/benefit slots in the draft are 16 and 32. Hmm...didn't somebody just mention that packaging #24 and a 2nd would put the Pats around #16? And of course we're all gunning for #32. That pair of picks would be oh-so-Patriotlike.