Agent - Having a dedicated staff that negotiates contracts with free agents will allow them to offset the Sale Fee proportional to the nominal sale fee value. This will allow GM’s who enjoyed the aspect of day trading an option to entertain that strategy more than they can currently.
BBs have worked for more than a decade to minimize/limit day trading and you want them to support exactly whatever they were fighting against XD
That aside, I think it has potential (it could very well fall into a trap like the PR manager depending on how they implement it, but I don't really understand how you propose it to work. Is it supposed to reduce the transfer fee? Or increase the percentage you get when you sell a player?
I love the other 3 tho, especially the therapist. That said life coach might cause things to go like the training court - we've already got NT players hitting legendary experience before their skills regress. If the impact of a life coach is significant enough, we might actually see players hitting that before age 30, and the devs might end up having to limit the impact of experience in the GE to balance it. Of course, I don't see it as something every team will get, but it can still cause problems like the training court.