IMO, mental coaching is vital for coaches. they are nothing if they have low mental attributes! it's what gives them 5 stars in training.
For scouts, you always have to have 1 scout to 'scout next opposition'. high tactical KNOWLEDGE & PA is vital in this job role.
For scouting under 20's, high PA. for scouting league games or cup competitions, high CA is vital.
You also have to have at least 1 scout with 20/20 PA CA& high determonation. assign him to be your main scout in the team settings.
For *** Man, i prefer if they have high CA & PA, high tactical KNOWLEDGE, high Man management. I don't really mind if they have low discipline or low motivation. I usually take care of disciplining red carded players & team talks anyway. a great example of an *** Man is Werner Kern!
For youth coaches, it's ok ef they have low mental coaching as long as they have high 'working with youth' attributes.