It would be nice to be able to take, let's say, a 2016 Roster make TDL moves, then have a button to take the roster to 2016-2017. And then make moves, and then take that to 2017-2018.
You can kind of do that now, but you have to restart each year and remember which moves you make. Also being able to take a roster year to year would prevent you from having to Create a Player down the line if he was a FA in the past.

I think this would be a great addition.