in 2004, the Bills should have taken Vince Wilfork instead of Evans and highlights the problem with the Bills arrogance in not building the trenches.
Evans has his moments. Wilfork would have solidified a sesive like run defense, pushed the pocket to allow our DEs better success and allowed the Bills the flexiblity to play both a 3-4 and 4-3.
The same applies to the Whitner pick. After passing on Wilfork and still not solving the DT problem, the bills again passed on a Pro Bowl DT in Ngata.
The Bills waste too many premium picks on small players and ignore the trenches which are the core of any team.
The other important element missing from your anaysis is the number of picks (and potential starters) wasted in moving up to draft many of these slugs (JP, McCargo, Denney, POZ, etc)