I'm only looking at the dies for piecing. If I want applique, I also have a Silhouette Cameo and Adobe Illustrator. I can draw what I want. I've found that standard cutting dies are never the size I want.
You are limited to what most people do. Using the Silhouette, I can make an appliqued doll quilt exactly like a large one without having to cut the fabric by hand.
I also paper craft, and the Sizzix dies were never the right size. I sold the ones for papercrafting, now I need to get rid of the quilting dies. Sizzix stopped making the one die I do need.
Now for squares, strips and other geometrics, there's nothing like a good die cutter!