Save background presets
Every image I create I must edit the background to transparent, no floor, diffuse floor lighting, then adjust the level and decay. It would be so handy if I could simply save a preset or "Save as default" rather than having to manually adjust these items for each and every image I create with Boxshot.
This same preset behavior could also be carried over to the elements, set as defaults for a paperback, set as defaults for a hard cover, set as defaults for a magazine, etc.
In Blender they have a "default" project, the one that is loaded when you click "File->New", you can replace it with your own and every time you make a new project you'll get that one instead.
Will it work better for you? There will still be just one default project, but you can adjust it the way you need.
Raphaël Freeman commented
Actually I think using dummy projects is a poor way of handling this.