FWIW - I don't think he's the best WR in the class. I couldn't, in good faith, put a player in college whose primary success came out of the slot and often winning (in impressive fashion, to be fair) over nickels, safeties, and the occasional LB (v dumb teams) over a guy that basically turned numerous Round 1 cornerbacks into legit toast in Ja'Marr Chase or a Marvin Harrison clone who has mastered the WR position at the college level in Devonta Smith. I don't think we're talking about an apples to apples comparison either. We're talking about two different kinds of players if you start comparing Pitts to the other WRs in the class.
He's got a few really impressive plays where Pitts turns a legit CB into something stupid (he had a ridiculous over the shoulder catch v. Tyson Campbell for example), but a lot of his film is coming against some legit jobbers...and yeah, he's absolutely son'ing them...but a guy like Ja'Marr Chase has an entire family of sons that went on to become R1 corners.
Whats the value of a Darren Waller? I'm not sure, but I probably am not taking a Darren Waller on steroids if I have some questionable quarterbacking, lack an OL, or don't already have some competent pass catchers on my team. When discussing Pitts, its not about where he is as a prospect, its about team building. He's a Top 10 prospect...but I'm not sure if a Top 10 team should be taking him.