Sometimes to my eye a lot of FMQ seems to "distort" the design and detract from the fabric.
To me the purpose of quilting is to keep the layers of fabric from moving and not to be the feature of the item.
That is just my humble opinion - by no means right and not written to offend anyone.
BTW I admire those you can do those lovely designs on their work and my FMQ skills need a lot of work. I like to use the walking foot to do my quilting.