Even more than kits! Flipping, rotating, enlarging or shrinking parts, deleting layers, adding and removing photos spots...there are so many ways to make a template look different every time.
Even though I own soooo many templates, I find myself using certain ones over and over. I think it's because I gravitate to a particular template style that isn't that popular right now (multiple big photos plus white space, several papers, and smaller clusters).