BPA is probably more important in the early rounds.
Players are typically grouped by grades and there will often be multiple players available with the same or similar grade when you are picking. If there are a lot of players with similar grades and they correspond with you areas of need that hsi often when you will see a trade down.
So BPA is subjective and often the draft, which is a crapshoot, will give you a BPA group that allows you to fill some of your needs. Now of course there isn't always value available when you pick. In the latter part of the draft you might reach a bit to fill that need. That is okay from the 5th round on IMO as you are probably looking at around 30% probability of that player sticking anyway. Where teams really screw themselves is when they reach early and pass up better talent. The earlier in the draft that you reach and the further off your value board you go the more the greater your odds are of failure. When you do it early in the draft you are giving up the most value.
