If I paid a long arm quilter to do custom quilting, I would be very disappointed if they under-quilted my project -- I would be looking for added artistry and design elements -- think of the work by Angela Walters or the name escapes me, but Green Fairy Quilters. Otherwise, I see no point in paying for professional longarming. So I would say the take away is to find ways to communicate very clearly what your expectations are if you are a customer. And if you're a pro, be clear and honest about your skill set and what you can reasonably deliver.