Would be cool to be able to convert an entire page to a reusable element
I usually have a page for quickstart. And I create new pages just cloning that one. If you want it like an element you could fit it in a group and use that by making it reusable.
We mainly need this when taking over new projects and reorganizing apps that have the logic all over the place.
Projects developed by our own internal team are mostly structured inside reusable elements and follow DRY principles where possible.
Thanks for trying to help though.
For all other developers who need this feature to be implemented please upvote on the idea board here