It would be nice to have a breadcrumbs block that we can add to the any area of the content.

EDIT:
I am cleaning up the proposal.

Here is a screenshot that uses the paragraph block to exemplify breadcrumbs.

One could add a breadcrumbs block to a post/page template, and style it directly in the template, and/or the block could become a dynamic reusable block.
Some styling options could be font color, font size, background color, icon between each level and width(if the breadcrumbs block is to stretch all the way across the post/page). Showing the path hierarchy with page/post title names.

This would be one of the Full Site Editing blocks which would be dynamic in nature, showing the relevant information based on the page/post one is currently on.

Initial post:

Here is an example from @aristath 's Gridd theme: https://github.com/wplemon/gridd

Here we need to be able to change the text and background color.
Rename/relink breadcrumbs in relation to @karmatosed 's below question. (Reason why I mentioned renaming is that some sites will automatically add a title called Home to the front page. It would be good to have the home page name used instead of the name Home.)