I don't think improved command constitutes a massive and unexpected skill change. His skills are his 98 MPH sinker and plus curve ball, which he's been unable to command much or turn into the viable K pitch that it looks like it should be. He has the skills, he lacks the refinement. Even a moderate improvement in his command could make him a very valuable asset. You can't teach his heat but you can reasonably expect a young pitcher's command to have a chance to improve. He'll never be an elite K/BB guy, but he doesn't have to be if he can get to 60% GB.