HTML Edit Mode
Sometime medium-editor screw up and generate useless HTML codes. So we need to provide option where the user can edit the HTML (like classic wisywyg editor)
I've seen this done in other editors like Redactor where click the < > button switches to editing the raw html. We could potentially do something like that.
This is a good enhancement/extension to have.
I would suggest that if there is "useless HTML code" being generated, it should instead be documented and cleaned-up at core instead of relying on HTML Edit Mode picking up the task.
I've actually got this started, if someone can help me complete it: #1507.