A pianist
I don't think Hamelin is interested in extreme orchestration. He prefers to balance voices in a more understated way. Check out this extensive interview when you have the time. In the section where he is asked to identify old recordings he discusses Hofmann's underlining of inner voices and his own approach to voice balancing.
é-hamelin.html
Also I think it is dangerous to cast aspersions on an artist because he does not fulfill your own aesthetic needs. He might be trying to achieve something aesthetically that is completely different but no less valid.
I did comment last post on Hamelin's sitting very high and that imposes some limitations. But I also suspect that sitting very low imposes different limitations. He probably prefers sitting high because it enables him to get the results HE wants. Also, his movement might not be fully ACTIVATED but I think that it is still extremely INTELLIGENT and graceful.