It will really change the way I build my teams, which had in the past been a mutant approach. Still assessing the impact but:

1) I believe it will extend the usability of players past the age of 27-28 which is when I'd in the past sold them.
2) increase the importance of special abilities;
3) decrease the importance of training, generally. I already have players who are pressing on the upper limits of skill ranges now on all their white skills. Why train them now?

It will take time to learn if the change makes the game results more random as the teams may in the future be more closely ranked in terms of skill.