It's true. I'm always thinking of new ways to beat bare ass and make things even more challenging for the guy I'm thrashing.
Whether it's an expectation for him to maintain a hardon or deal with the additional task of keeping count of the strokes, thanking me for each one, I like my sub to have to multi-task a little bit. Just keep the surprises coming.
I really think that giving them this extra job creates a more interesting session and ultimately one that is more enjoyable for you to watch. That's how we do things at No Way Out.