I think there's a fineline of everything on this universe, including a D/S relationship. The most powerful D role is not just by sending out demands / to do lists and requesting services. I know this are all very important and basically the chores we as S need to complete and fulfil. However, a D/S relationship is a two way bridge, I think the most powerful D power comes from knowing when/how to push and when to stop either physically or mentally, or both. Knowing how the mind of a S works and how to trigger a S to come out of his/her darkest dreams and make them happen in reality takes a lots of skills and patience. It is like fostering a vanilla relationship, but takes so much more efforts than a vanilla relationship if both parties want to make it work for more than just a roleplay, a fuck or simply a fulfilment of personal needs and desire.
Just a bit of my thoughts today. Agreed?