The requirement is to add different templates to a page / spread.
It should be possible to simply combine templates independent of each other. Not based on etc...
The names of templates could then be displayed one beneath another in page list preview. To apply several templates, we could select them at once and drug and drop to the page list preview.
For example – one template for page numbers, another template for logo. Combining different logos and different colors of page numbers will then dramatically reduce the required template quantity.