Thank you for filing this idea!
Lot’s of good comments in this thread. There are a few notable features we are either actively working on or thinking about now that will make the blog experience more friendly and flexible for content creators.
For blog posts, we are working on making it possible to insert modules into the blog post body. While this will not allow full layout customization per post, it will allow a more complex post body with any default or custom modules.
We are additionally working on making both the blog listing template (in development) and blog post template (in planning) editable within the content editor, which will make it easier for content creators to modify their blog post and listing templates (drag and drop modules, edit modules fields, etc.).
I will report back when we have any public betas on these features!
Thanks
Will