Well, VIP system was a very good tools on old gen. On current gen, it was too simple, pretty useless. And this year, at least for me, it's totally broken :
I agree that the current-gen VIP System is so much more stripped down to the point where I haven't looked at it since 2K15. Although I haven't played any online matches this year, I believe the tendencies saved in our VIP are displayed to our opponents as a scouting report. I hope next year that they finally make the information available for the user to view and study.
I think it has been broken or not entirely used on all PC versions. The last time I looked deeper into it was with 2K8 for the x360. It had more stats across the board, including your personal tendencies and play calls. I'm pretty sure they can still track those things if they wanted to, but I don't see many people mention it, so they probably don't bother.
They could add achievements, trophies, VIP leaderboards or VC accomplishments to it to gain more interest and push it back to the forefront of advancements if they wanted to. Who doesn't like to look at their stats in retrospect? I loved looking at team and player stats and progression back in the day when playing dynasty and association modes.