Tell me, then, why has every draft day trade in the past 15 years conformed within 20% of the trade value chart? If you don't like trading down, that's fine. But attacking a system WHICH EVERY TEAM USES is stupid.
I love trading down, I don't love some know-it-all jamoke assigning specific value to draft picks BASED ON A SEVEN FUCKING YEAR OLD ESPN ARTICLE. And please, provide some sort of basis for this 20% statistic, or I'll assume you made that stat up.
For picks after about the 8th pick in the draft the trade value chart is really, really accurate (almost nobody trades for the top ones because top five or eight picks get paid so damn much). If you dispute it's a very useful guideline you don't follow NFL trades of the draft closely at all.
Nobody wants to talk about how cheap Ngata would be. It's mostly "OMG. 2 Firsts!" I said before in this thread, if you go by the value chart, Ngata would be cheaper than Curtis Martin was (1st and 3rd, but the first rounder was higher and the 3rd the same year).
The Revis deal (a first, a second, and a forth for a fifth and the number 14 pick) was probably more expensive than a 2011 Jets first and a 2012 Jets first.
