(To clarify for those who haven't used my roster: The roster is not absent of rookies with dunk packages)
Dunk packages have been applied to those who I've seen dunk with flair in-game, and they have dunk packages containing dunks that I saw them do (usually on several occasions) on tape/in-game while I was evaluating the player. I think it's a bit misconceived, but players in 2K are still able to do the basic dunks even without dunk packages, they just won't do very flashy dunks (i.e. under basket, rim-grazers, etc.).
For example, I don't think it's necessary to give Gary Trent Jr. dunk packages, because he while I did see instances of him dunking in-game, it was usually a pretty simple slam dunk when he did. So even though I could have given him the rim grazer dunk package, his 2K player will still be able to do those same dunks in game without it. Hamidou Diallo on the other hand, I've seen do some extremely acrobatic dunks atypical of your average player, and he has had dunk packages to reflect that since the release of my draft class in October.
With that being said, there are instances where I just may have not watched enough film to see a player do flashy dunks. I also generally add dunk packages as one of the last steps in my player creation process, and I have forgotten to add dunks to certain players on occasion because of my eagerness to finish and make a player available to use. I really enjoy feedback like this because it can help clean up some of my mistakes that are hard for me to catch on my own.
As far as play types, I didn't have the information to determine players' possessions by play-type while they were playing in college. I do now, and have already been working on adding play-types for the rookies. Play-types for the first 12 picks of the draft have been done for a couple of weeks, I just never made any mention of it because it's a work in progress