Federer is super classy, but he had some issues. I think it was a language gap. Some people were sick of his honesty. Roger's rep is top notch. I remember this year against DelPo, there was a challenge in which DelPo actually said to Fed, if you think you had a shot, lets replay the point. the chair was ready to give Del Po the point. It was interesting that his fellow players have such a high regard for him.
I think Novak is seeing that and his repsect factor has gotten better.