MARKDOWN
Column-Type and/or Show-Column Category.
This would take a Text-Input from a Long-Text column or any expression that evaluates to a string, such as:
CONCATENATE("**",[Column1],"**", "-", [Column2]).
…then display the text with Markdown formatting applied.
Column1Value-Column2Value
Alternatively, the existing LongText column-type could have this added as a display option.
I think this would really add to the UI in detail views, and it would be awesome if it worked with email templates.