For my first attempt at a shared custom roster, I decided to replace the All-Time teams with their 2017-2018 season versions.
I don't have the patience to perfectly tweak each player and how they improved/regressed, so the 2018 ratings may be a bit off, especially for role-players.
But, you can still play some interesting cross-year match-ups.
I've named it: 2018 versus 2019
Feel free to download it in the PC version of the game.
And let me know what you think of it!
P.S. I'm considering making many more dual-year rosters. Any tips on how to streamline the roster creation process?