I see both sides of this. AR is very open about what he expects from his WR's and its pretty obvious, if they don't deliver, his patience is rather short with them and he may choose to only throw them the ball if nothing else is open. But given that he has had some pretty decent talent to work with over the years, this has worked, except in the cases where injuries remove those talented players and AR is left no choice but to work with the bottom of the depth chart, the offense sputtered during some of those times.
Not that the draft was brimming with first round talented WR's, but I am a bit disappointed that an immediate need at the position wasn't perceived with the draft or free agent signings. Cobb could very well be gone after this year, so that is putting a lot of pressure on developing 2-3 guys who weren't considered to be high end talent coming out of college. Let's hope the scouts were wrong and all 3 are diamonds in the rough.
I do acknowledge, the amount of money spent on the top FA WR's this year was ludicrous.
2019 might be the year we see the next Jennings, Nelson or Adams drafted in the first round or 2.