Notion 6 already has swing display and playback, but it only shows the word "Swing". It would be more clear to the instrument player if the Swing marking had the option of showing the traditional display (You could show only Swing if you wanted, but had the option to show more information), as showed in the example below:
![Swing](http://answers.presonus.com/?qa=blob&qa_blobid=15625720789677450154)