Not something that I need for anything presently, but now that speech tokens are integrated into AC, it would probably be cool if there were tokens that allowed you to apply bolding, italics or underlining to text passages.
These tokens would have to be toggle-able, [italic] or [bold] (or just [i] or [b]) and then the passage, and then [/italic] [/bold], etc.
Italics in particular are great for not just text, but also subtitles, as they can denote actions rather than speech as well as emphasis within speech itself. Bold text could be good for monsters, I guess, though I have to admit I sort of like the history of ALL-CAPS usage in adventure game subtitles as well.
Comments
http://docs.unity3d.com/Manual/StyledText.html
If you were to make use of a Unity UI menu to display it, however, then you could probably write a script that replaces the label's text with your own amendments on the fly. A suggested code method could be: if an opening tag is found, but no closing one is there, add it on manually.
This is -> This is
This is <b>bold -> This is <b>bold</b>
This is <b>bold</b> text -> This is <b>bold</b> text