Some people like dense quilting, some people like lots of open space, and some people love tied quilts. There's no reason why you can't have your quilt the way you want it. Folks need to have a discussion with their quilter BEFORE they leave the top so that the quilting will be done to their satisfaction. Something in writing is always the best. Maybe a picture from a magazine of something they like. The more detail you provide about what you are looking for the better. Look at some of their other work to get an idea of their style.
Personally, I like the look of hand guided quilting with lots of texture. Bring on the feathers & swirls!