A variety of possibilities and options to try during a session. Also, an exciting, jam-packed flow always keeps things on the edge both for me and the subs. Essentially, I like spontaneity and flexibility.
Oh absolutely! Sometimes my feet are sore and I'm ready for a sub to massage them, or I see some ghastly instrument in an athletic store that just begs to be used to smack a sub on the ass. The possibilities are endless!
I definitely would! I've toyed with a few 3D printers in my time and find this so fascinating. It looks a little small at the moment, but I'm sure they'll be able to print larger ones in the future.
I think it's also about the relaxation - for lack of a better word, of handing the ropes to someone else. For a short while you don't have to decide what to do with your body, which, in today's hyperconnected world, can be a wonderful thing.
I remember a while back one of my friends bought these crazy holographic platforms that shifted color depending on where you looked at them. They were so cool!!!