Suggested

Driver Coach

I have notice a missing spot on staff so (after we balance finances a bit;)) we can add Driver Coach for example as Staff addon;)
Maybe he can boost training on specific areas e.g "Fitness Master" or Use less heath when training or maybe give random point(s) according to his rating etc.
I don't know if you had already any ideas about the missing spot just wanted to say this that crossed my mind;)

Thanks in advance;)

well, you already can chose which area your driver will train (driving / mental / physical)

@Martin Was thinking as extra not removing current options;)

Driver coach or doctor to recovery health fast, o spent less at training

i like that Sam.
I was thinking on something similar:

One slot free for staff. (3 already fixed + 1 to choose)
there, we can choose if we want another doctor to increase the doctors impact. or another chief designer helping the primary (gives you a little bonus, i dont know), or new professionals like a staff manager (helping you to see more options in the transfer list, or get better contrats...), Driver Coach, or anything.
This way, we can be stronger in the area we choose.