I just saw that once the season is over, the year of each player is identified on the rosters. I’m a relative newbie - this is the first time I noticed this.
I try to always do a quick once over to "assess" my final grade on the season. As much of my final record, the actual seasons allow me to see if I made good decisions on the which cards I had and maybe where I can improve in the future. You almost always cut some cards you probably shouldn't have, and this allows you to try to figure out why you did that.