Well you need to increase that passing for sure. I'm not sure if team-training is the best option though. Maybe it's wiser to train your SG and maybe SF in passing a bit. Personally I want better passing and handling on my PF and C as well, but maybe you can change that later on with buying/selling or training.
p.s. I didn't check the age of your players, but that's an important factor as well in your decision ofc.
p.p.s. About the discussion about the game ratings. Even though the game ratings have no direct effect it does of course say something if the BB's weigh a certain skill more heavily in teamratings in either LP or LI or something. I don't think they decided on those weights randomly.
Crunchy! If you eat fast enough