I'm not counting on any additions. In fact, my biggest hope is that there's not a repeat of the last gen crossover when all the classic players reverted to monstrosities that took half the generation to fix up.
I'm also always fearful of losing the little things that were built up on the last gen to really bring everything together. Seems like XBoxOne/PS4 era was largely spent pining for the return of classic aspects that were already there in 2K12. And now just a few years after finally getting the classic signature dunks right, Jordan's layup package and ball fake back, signature dribble styles (Magic, Isiah, DJ), and an insane amount of classic jerseys with custom shorts length, it's time to move on to the next gen.
I hope all of that stuff makes a smooth transition this time around, with all classic teams making the cut too.