Nash, great stuff!

BTW, is it your experience that very hard practices are better than easier practices in terms of gain/condition loss?

I've not done any researches, but that notion has popped up for me from just observing the results, but I don't know.

Also have you understood how the grey/non-grey ability works? It is obvious that a player practices much worse on grey abilities -- but is the overall result worse? Like let's say you do sprints with a wing-back, dribbling is a grey ability. Will the wing back get worse result than like a DML/ML/AML who have no grey abilities?