For me... I disagree. I always recognize that "I must do better"... I think all dancers, pro am, am am or pro pro, feel that way. It is nice though to get some positive feedback, as stated before, not effusive, but enough to feel that I am making progress. If a pro stopped focusing on a particular element of my dancing, I would not necessarily think it meant that I had improved, as it could mean that they realized I was never going to get that particular element and had just moved on.