The character's talent is more fun to keep secret for a few months.
If check immediately at the time of audition, use Research Points.
It's a good idea, but I think it should be decided by options or difficulty settings.
I don't want to hire people with negative traits, even in the platinum class.
I think that a good producer can detect the characteristics from a little word and action without any special investigation. (Actually, the idol's comment at the time of joining is determined by the characteristics)