I think it would be useful adding one more feature for templates so that you can directly duplicate one.
I’m working on a template, doing some major changes and adding some more content. Since I want to keep the old content, plus the new one, but I’m going to reshape/reorganize everything with a new visual structure, I now have to choose Use the template first, and then save it as a new template. It would be easier — at least in my opinion — to simply be able to duplicate a template and immediately create another one.
