I think the kinks lend themselves to age play. I give really good spankings... they hurt, are going to leave the recipient sore (turned on, but sore), and really aren't negotiable. And, anyone who has ever had one wants another. I'll do the deciding for both of us. And, while there are obiously safety concerns with enemas which require stopping if the recipient needs to, generally I'm going to decided how much water you're going to have, how soapy it is going to be, and how long you're going to hold it. All of this blends very well with age play... giving up control is what makes this all so delicious.
Frankly, I like the idea of diapers... unfortunately, I just hate the whole poo thing.