I believe Vrana has this ability to be if not a super star, then something very close. Then considering a magnitude of talent, coach has to figure out what problem is, and address it. And if coaches cannot develop Bura and Vrana, then it is too bad.
I agree with Trotz developing Vrana the right way, but I also think it's a bit too early to tell if he'll be a big deal or not.
I think Vrana is certainly not another Semin, he shows up in multiple ways on the ice not just throughout the regular season but in the playoffs too consistently to be as streaky/work ethic problems like Vrana.
I recall a few games ago or maybe it was the first round, Vrana was bumped down and a lot of people heralded it as a reason why he was in the doghouse. Even though Trotz himself came out and said that wasn't so, in fact Vrana had points when he was up in the first round before he was bumped down. He was bumped down because we wanted Stephenson/Backstrom/Oshie as a line to be a shut down line that could also threaten to score, and our coach was using that line to counter teams top scoring lines often. They started defending Pannarin for example, and suddenly he got way more shut down. It had nothing to do with Vrana playing badly, that is just line change for tactical reasons.
People don't realize this but Vrana is also bigger than most people give him credit for. Yes he skates fast, but he's 6'0 and this season showed up weighing almost 200lb. By no means does that make him a big mean player, but it means he at least is an average sized NHLer and he has an underrated defensive stick. His big issues from what I can tell are experience and a lack of natural defensive understanding. I'd say he has way more offensive IQ than defensive. He just needs to be coached well going forward and I think he could become someone like a Patrick Sharp honestly. Solid defensively but not amazing, good speed, big enough to hold his own strength wise with his stick, and a good shot.