OK, thanks for the clarifications.
It is explained well in the entusiasm section. I guess with my misunderstanding with enthusiasm values combined with "Scrimmages are purely for training and game shape purposes." in the scrimmages section I thought it might be clearer if you mention potential impact on enthusiasm. But since MCSmooth clarified that enthusiasm is affected even if you don't play a scrimmage that week, it doesn't seem relevant to put any enthusiasm talk in the scrimmage section (other than mentioning it must be played on Normal, which I think you already did).