I believe Pitts (or any top TE) adds two things on offense.
1 - He creates personnel mismatches vs pretty much whatever defensive personnel you line up against him. This means you are adding another player like Hop who can win one on one matchups.
2 - He enables a larger and more physical personnel package on offense while also increasing offensive team speed. We need to be more physical on offense and he can do that.
I'm all for Pitts at 16. He's a willing blocker & excellent receiver. If not him then we need to find a good athletic TE in one of the later rounds who is at least an average receiver & decent blocker.