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
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Hi. I use the "[node:title] | [site:name]" tokens for the main image of news articles, blog posts, and similar publications. It's a quick and practical automatic ALT.
How to Improve SEO Performance in Backdrop CMS
I understand how tokens work, but not so much their practical use in image alt/text (maybe caption?) text. Could you give an example or two?
How to Improve SEO Performance in Backdrop CMS
https://backdropcms.org/project/metatag https://backdropcms.org/project/xmlsitemap https://backdropcms.org/project/imagefield_tokens These are more powerful modules, in my opinion...
How to Improve SEO Performance in Backdrop CMS