The blocking is a bit of an issue, i agree.
It's something that I was actually surprised early in the season that I thought he did well on. They would line him up wide, run a quick pass and I thought he would do a really good job blocking his man. By the end of the season though it just looked bad again. I'm not sure why this is. I thought he was a bad blocker prior to this season and was actually kind of shocked that he had taken that next step.
To me there are two types of TEs that you sort of give the money to. Guys who do what Schultz does plus excellent blocking. Call this your Jason Witten type. They aren't going to burn many people but they get in the zone well and catch balls. And then on the other side they impact the game as blockers.
Then there are the other types of TEs. They are more like WRs. Their blocking sucks but you accept it because they run really well. They require a corner or safety in man coverage and will torch basically any LBer. You accept the poor blocking or substandard blocking because of their YAC and things like that.
Schultz doesn't really fit into either of these categories. I still think he is a good player and I've seen glimpses that make me think he is capable of being a good blocker. Just not sure if it's lazy or a beat up body that had him half assing it the second half of the season. So I'd love the guy to be back and I'm not necessarily actively looking to upgrade him. But on the same token I'm not ready to pay him like a top 10 TE in the NFL either because of it.