I know we poo poo the front office for having poor taste in wide receivers, but our fan base seems stuck on this notion that height + speed = elite potential. AJ green, DeAndre Hopkins, Michael Thomas, Mike Evans are not fast, OBJ and Antonio Brown were not tall, and from my 1 minute research prior to writing this only Julio Jones had both traits. Playing WR is very nuanced and involves lots of film study to know the intricacies of how to manipulate the DBs that are covering you, and knowing how to position your body so that the DB does not beat you to the catch point.
I agree, and I'll also say that there's sort of two different groups here:
1. There's your "can't miss" prospects. AJ Green, Hopkins, Mike Evans, OBJ, Julio types. They're largely 95% developed by the time they step foot in OTAs two months after getting drafted. The only thing they need to succeed is for you to throw them the ball. They can play in any system and play well with average or worse QB play, which pretty much all of those guys have.
The reality is that it'll take something extraordinary for the Ravens to really be in a position to get one of these types. They typically don't fall past the top 15 picks in the draft (mostly top 10 guys), and the Ravens, even during the Flacco era, were at least an average team every year, which means on a bad year you're picking around 15-20. It would take something similar to 2015 for us to be in a spot to get those guys, and even then, we'd have to be in a position where a stud WR is our biggest "need" AND that a stud WR in that class exists in the draft for us to pick one. The 2016 draft, when we took Stanley high, was a notoriously weak WR class in the pre-draft process, and that's proven true.
2. There's your Michael Thomas/Antonio Brown types. Thomas was NOT, by any stretch of the imagination, viewed as a "can't miss" prospect, and pretty much nobody knew who Antonio Brown was.
These guys usually are missing an attribute or two you're looking for in an elite WR. Thomas was criticized coming out of college for being "raw", having "bad footwork" and being a "terrible route runner". They thought he had a lot of work to do in playing through contact.
These guys required more development, and they got it. Most of that is on their own through desire and hard work, but some of it is coaching and player development.
And as everybody knows at this point, the Ravens franchise, through multiple coaches, GM's, etc., has a horrible track record of developing WRs.
And that's the real problem.