Hi Clawdia,
Post #12 here has more information about quilting layers.
It’s really a personal preference and as long as any lower density polyfoam use in quilting layers is reasonably thin (I use a guideline of “around an inch or so”) it can be used to change the surface feel of the mattress and it’s really a matter of preference between sleeping directly on the latex or sleeping on latex that has a quilting layer of polyfoam or natural or synthetic fibers above it.
As long as the quilting materials are not too thick then they won’t have any meaningful affect on the durability of the mattress.
Phoenix