Hackenberg is an easy player to fall in love with if you want to. He was a big-time recruit, he has the size, he has the arm, he's got a little bit of mobility for someone that size, and he's supposedly a great kid and a hard worker.
I think I posted last offseason before we drafted him that he has the physical skills of a 1st-round pick, and the tape of an undrafted free agent. The Jets clearly thought that he had the ability to be a great quarterback if they cleaned up a few of his issues. Clearly, that's still a work in progress.
The idea that they should have waited a round to get him doesn't hold water with me. If you think you can get a potential franchise quarterback, you take him, and you don't wait until someone else can grab him. Hackenberg was the type of player where I bet his evaluations ranged from 2nd round to 7th round. If the Jets liked him that much, it's better to just take the player than to play the game and pray he slips.