Love having the option to have these background dies. They cut very well and are great to make backgrounds to your shaker elements. I love that you can also use them to make non shaker items to put on cards which stretches your card kit even further.
I always order the outline dies when I get a kit if they are available! Having them with the kit gives you the ability to cut more acetate and backgrounds for future cards. They are essential as far as I’m concerned!