I probably looked at it when I was new here, but I only bought stuff based on whatever theme I wanted to do at any given time and the Showcase seemed to be for "everything new not already in 'What's New'" and I was only interested in what was new for the themes that interested me.  Too much good looking stuff to sort through, though I probably added a theme or two to my wish list because of what I saw and just never got around to them before the old computer became unstable.