See my concern with Lakovic is that you could have said the same exact thing about Mantha, who absolutely demolished juniors before turning pro but never put together that effort level/physicality that you wanted out of him. In theory I agree with you entirely, but we pretty recently saw an extremely similar player who was never able to add that effort level/physicality.
I'm not going to be mad if they draft Lakovic, but effort level problems are as big of a red flag as skating problems to me. If they take Lakovic and Smith at #11 and #12 as upside swings, I wouldn't be mad but both guys have major red flags that scare me pretty badly.