I have the impression that site builders/admins use a different theme for the admin backend. How cool would it be to be able to preview the changes made to the layout/blocks of the frontend theme as they make changes in the UI?
Here's how Craft CMS does it with their WYSIWYG editor:

We already have a live preview in place for views and another for the color-picker, so perhaps we can abstract and reuse that.
GitHub Issue #:
986
Recent comments
@yorkshirepudding thank you for the additional info on improving discoverability and a handy way to keep a list of projects for reuse.
Why not add a Github star?
It is a good point @izmeez and when I was researching repo discoverability I found that GitHub search does prioritise matches with more stars. This is what I was researching for:...
Why not add a Github star?
Do you have a separate development environment and transfer database and config between sites?
Wierd happenings regarding updates...