An interesting idea would be do have more dynamic performance , dynamic and rhythmically flexible, harmonically complex, and timbrally dynamic to the furthest reaches of sonic possibility.I realise some areas of music have attempted some of this, but it's an interesting possibility.
What is the difference betwen energy and intensity? I mean, I have heard pianists who made me cringe and collapse with a beautifully played combination of simple pp notes without any complex harmonic changes.