This is BB, so nothing is 100% right and you can find different opinions about the same question. Difficult to say what could have changed since you don't say when you left, but training has not changed for a long time, after the cross training was introduced. Maybe the possibility of training below 100% in other positions (for example you can train one position OD not only to guards, but to SF, PF and C just with a different penalty depending on the position.
JR has changed a bit, long range shots are suppossed to be a bit more effective now.
And about SB you will find the same opinions as before. Some users (including me) think it's a very useful skill which helps a lot in defense plays, others just think it's a way of having more salaries without real effect in the games.