Don't get me wrong; I like him as a prospect, and if Buffalo had finished the year with a top 10 pick, I'd consider using it on him. But all of these trades to potentially move up and use it on such a risky prospect scares me a lot, so I'm with you in that regard.
The big question is whether or not Buffalo believes he has the tools to be an accurate passer (mainly the coordination required to understand where he needs to put the ball in order for it to hit a moving target in stride) and simply needs to tweak his mechanics in order to get there, or if they think even with improved footwork, he's incapable. You can tell watching his film that his footwork definitely causes issues; I'm not smart enough to be able to tell if the coordination is there or not.