Decide if the next break will be a short break, or if you'd like to pull the long break closer.

I tend not to use keyboard shortcuts, and it's not about immediately starting my break. What happens, is often I check the screen to see the length of the upcoming break, or I see the length of an upcoming break in a reminder. If I'm focused on a task I would like to override long breaks and set them as short - so I just take a quick breather and dive in again, and if I'm about to wrap a task up I'd like to set my break as long, because I know I'll have space. The decision being made ahead of time is great, so I'm not always taking long breaks and I'm not forgetting to get up and stretch - but sometimes I'd like to manually override it.