Doug Baldwin started to be more productive when Bevell had a chat to Wilson about getting the ball out quickly and into smaller windows, trusting in his receivers to make a play instead of waiting until they were wide open to throw the ball (which was resulting in sacks, incompletions, running out of bounds, and in general a lack of offensive production).
When Wilson started to get the ball out faster, EVERYTHING about the offense changed. Suddenly the line was better, the receivers were more productive, Wilson's ratings went through the roof, the running game was more productive, and EVERYTHING worked (sort of - then we hit Carolina and Wilson couldn't find his ass with both hands).
There is no reason to believe that will not continue to be the case this coming season and for the remainder of Baldwin's contract because the fundamental change was in Wilson, not Baldwin.
It's a team sport, guys. Analysing one player in a vacuum doesn't work. I don't care if the metric is stats or perception or whatever - the play of a receiver is dependent on the QB who is dependent on the running back, the OL, the field position provided by the defense and special teams, the strength of the opposing team's offense and defense, the down-and-distance, and the coaching philosophy.
Every one of those factors impacts how we use Baldwin, but one of the biggest is the trust relationship between QB and receiver. That's there now, and there's no sign it will change.