I actually make one of these every year, but I've never shared them. I've created a custom roster with current players updated with their MyTeam stats*. The badges and attributes are updated, and the tendencies are updated with one of the realistic tendency rosters uploaded here (I forgot which ones, but everyone except the rookies should be updated). I did try to copy over the MyTeam stats without letting it get too silly, so the free throws are left unchanged, and certain stats are more realistic (Ben Simmons / Deandre Jordan's 3pt aren't updated), but it was hard using MyTeam's overpowered stats while keeping things more tame. So let me know if you guys have any tips or changes to make that side of it better, I've done my best to not give players overpowered stats that they should never have.
*This means I've updated a current player with the best card available, ex. Rose and Rondo have their best "prime" cards and stats. And a couple of free agents are updated as well.
Updated with newest MyTeam cards: 5/24/2021
Roster Name: myteam
User: BreadAndBackAgain