If talking tanking intentionally for one specific year I recall the Suck for Luck campaign.
The alignment sucks. It was neat until posted. I understand that, and there is nothing I can do to make the proper columns. So let me help......
Year Draft Pos Team School Prior Next Change Finished
2000 Courtney Brown DE Cleveland Browns Penn St 2-14 3-13 1 6
The year is 2000, the #1 pick is Courtney Brown, He's a DE, drafted by the Cleveland Browns, from Penn St, the year prior the Browns finished 2-14, the year they drafted him they finished 3-13, they improved by 1 game, and finished 6th in their division.
So all it is is the first pick, position, who picked him, school, record before he was drafted, record after he was drafted, how much improvement, and where they finished in their division.
If the argument is that we're not as bad as some of those teams, I'd agree. But even in the case of Luck (much like Dak) he was drafted with players in place (much like Dak). Even then, his first year he lost in the Wild Card, second year he lost in the Division Game, and third year he lost in the Conference game.
Getting the consensus best player in the draft does not ensure you are going to the play-offs, that you're going to improve, or even that you are getting out of the basement. Overall these numbers say, "high draft choices do not on the whole provide enough on field performance to be worthy of tanking."