I would have to say WR.
The last 6-7 years, we've done the D-line thing, and it hasn't gotten us home.
FA signings like Addison, etc.
Then draft picks, Oliver (1), AJE (2), Groot (1), Basham (2), etc.
Mega signing and mega deal for Von Miller and a big 1-year deal for Floyd.
What have we done at WR?
Traded a 1st round pick 4 years ago for Diggs and drafted a couple 4th and 5th round picks...