Since in old version I was not used to train my team,I used to play lot of friendlies,even vs higher level teams.
Now,that I found a more complete and rational training strategy,there is no more space for friendlies,apart if I want to earn rests vs weaker friends...
well, that's a disadvantage because with the old version you could play friendlies, players gaining progress and the team earned some good money (for higher levels with a big stadium).
The problem with the new version is that with friendlies players still gaining but you don't have any progress about the level of the drills.

Another useful tip is what I 'm doing after a game with the old version.
I go in training section and making a sort for the players, about the blue bar.
Then I pick the players who have the blue bar near the next sp and give them a training (in 2 bars), so to earn it and sign it where I want to. So there is no problem if I go back and return from the new version.