How many pages an we get to debating what BPA means lmao. A few points This Jimmy Johnson interview was pretty entertaining and he talks about BPA and the trade value chart.
A guy I talk to on another forum used to sell various software implementation Services to nfl teams. Mostly was playbook related, but I think he did some draft stuff too. His claim is that teams definitely don't rank their draft chart down to the hundredth decimal difference like Kyle's original example. Much more of a star or straight 1-10 rating type ranking. I always figured BPA is more a scouting and setting your board philosophy. You want to evaluate without bias. Come draft day, it shifts to a "best value" discussion which is complex and perhaps esoteric even. But might consider need, positional value, scheme, strength of the board, and perhaps many other things. But I think in popular parlance BPA does just mean that needs isn't the main driver. And to the extent you are looking at need, after like the top 50 picks, immediate need tends to stop being that relevant. Most your rookie value is gonna come in years 3-4 of those deals, so it's much more of a need elimination thing where you aren't gonna burn a spot on a guy if the roster is super stacked and there's no room for him. But you aren't trying to answer "what's my biggest need this year"