I think that having custom draft classes in Myleague has really helped flesh out the simulation season to season. Giving the player the option to mold the next promising prospect out of the draft. This feature makes Myleague more interesting because you have the power to control the landscape of your League.
Draft classes are the most promising feature to 2K. It'd be even better if that feature was brought over to Mycareer. Where a player can import a new draft class each season. This gives the player the advantage to decide how his league will play out and make flat out basketball phenoms rather than generated players that I don't know about showing up next season. Seeing those players progress from prospects into bonafide superstars and it gives your player someone to look out for new each season.
It'd be cool if you import player DNA into the draft classes and have someone like Chris Smoove or a High school prospect Jalen Green and you get to see his scouting report and weakness. It really gives you a way to gauge a rookie and their potential.