The Wide Receiver position is a concern is you ask me. So is Running Back. Besides Olave and Shaheed, the Saints have no one who scares the defense. And if they can't run the ball they're toast. The Defense can only do so much.
Olave is never going to be a Great receiver. He gets no YAK. All the great ones do. He hasn't changed since day one. Great separation, catch, drop down...