As I'm creating a new template I usually start to do the same kind of build with elements. I was thinking, it could be useful to have custom user presets when adding a new element.
For example, I like when creating a new panel to have it's widget be transparent, inner padding set to false, stroke, alpha stroke to 0, set to grid with starting of 2, etc...
Perhaps, when right-clicking below +Add Element could be a user add an element, or inside the submenu of +Add Element could be User Defined elements.
Food for thought!
Cheers,
DMDComposer