I think we are in the phase of more is better. It may not last, who knows...
It depends on the use of the quilt for me. I have been practicing my free motion quilting on the longarm, so they are pretty heavily quilted. I can't afford to make a bunch of quilts just to practice on, so I use what I have. If it is a quilt that is going to be used a lot as in a hospital, they prefer it to be fairly closely quilted because they are washed and dried so often. Show quilts have a lot because they are judged on the quilting also.
There was a topic on this awhile back and the majority of people who responded didn't want their quilts heavily quilted.