Watkins hasn't added anything any decent NFL WR couldn't have added. The "decoy' narrative doesn't hold water upon closer inspection. Their top two receivers this year, Gurley and Kupp, aren't benefiting by Watkins theoretically "drawing the other team's #1 CB" because they're not going to draw that guy anyway. And if the argument is that Woods benefited from that this season, why didn't that also hold true in previous seasons?
As it turns out, it's also not true that Watkins always drew the other team's top CB. Sometimes he did, other times he didn't. McVay's schemes are more responsible for who drew what coverage than anything else. At the end of the day, Watkins proved to be pretty much what he's always been in the NFL. Overrated and imminently replaceable.