I think you are way off on this one, DR. Dan. Moncrief and Funchess are WRs who fail to stand out in any way. Pettis is one of the most unique receivers out there. If you just want to say he looks like low production to you, say that. Comparing him to low production guys who play a completely different game is confusing.
From coachspeak, the goal is to have Pettis, Deebo and Kittle virtually interchangeable so the defense never knows what's coming or who will line up where. They are all 3 learning every route at all three positions (the receivers, of course, learning routes instead of blocking from many TE positions) although all Shanahan receivers can block. This flexibility has been a Shanahan trait and they are pushing it even further. Drafting Hurd was confirmation, as his primary trait is that he has played and can play every skill position except QB, and all well. I get the hope for this year to be Kittle and Pettis to start with Deebo as a rook and Goodwin (and even Hurd) rotating in the third spot. I think we see any 2 of Kittle, Deebo and Goodwin with Pettis in "11" sets. A major goal is to be the least predictable team in football coming to the line.
Long term, I think they see Pettis, Deebo and Kittle as their lineup, with Goodwin and Hurd as plus backups with very different skills. Not recognizing the unique ability Pettis has to change direction and get wide open, despite his average speed, is missing the boat. I think he's a major bargain now, as people like Dan who are seeking speed and power look elsewhere.