From what I have seen, Lamar Jackson has made the same transition that Mariota did. Mariota chose to try and become a better thrower from the pocket. I have seen a similar development in Jackson form last year to this year. However, in his third year, Mariota still struggles with the change and looks unnatural at times in the pocket. I imagine Jackson will be the same. I think Jackson, like Mariota is worth a first round selection. However, you will need a good offensive scheme and coaching to help him make the transition. (that is the case for most young QBs I would add.) Ideally, you want Jackson to be able to develop into Russell Wilson/Aaron Rodgers in terms of their ability to use their mobility to extend plays and create opportunities outside of structure. It will allow him to feel more natural as a QB.