true pianism lies in ability to make ppp which can be heard in last row of the hall as well as in first one and still be quiet as possible. everybody can make fortissimo, only few can make the wonderful piano. that makes the difference between good and bad pianist.
My philosophy is that if a composer liked a note enough to write it down then it should be heard clearly and distinctly; therefore, unhearable pianissimos, excessive pedal, and excessive legato are all bad. Also playing a the harmony so soft that you cannot hear it is bad too. Every note deserves to be heard. I wish that damper pedals should be outlawed. (or at least full dampers, partial dampers might be okay depending on the circumstances).