Help with leather puddling

[nfilling]

We purchased a City sofa and loveseat in Cavalier leather in the Town and Country program about a year ago. The standard cushions that we ordered were too soft for my husband once the pieces were delivered, so I was able to obtain extra firm seat cushions for the loveseat to see if they were more acceptable, which I have pictured. We are distraught with the puddling and stretching of the leather. We had Distinction Leather pieces for years with innersprings in the cushions where the leather always looked neat and tight. Would a Marshall Spring seat cushion be more supportive than the extra firm cushions? What can be done to eliminate the loose appearance of the leather?