I read your blog and I agree that you can't constantly bombard your wife with every diaper thought, mental image or whatever we feel and talk about. My wife was quite understanding and accepting but I was careful to not push it too much for several reasons. One was the obvious, that I didn't want to ruin a good thing but the other was a little more psychological in depth. She had the image of me, the one I gave her when we were dating and first married and she didn't want to lose that person. Diapers and regression takes one's personality in a different direction so I had to assure her I was the same person she married. That person was a musician, a weight lifter and someone who raced two cars on the track. You get the picture.
For me, I don't have much desire for others to know I enjoy diapers and regression, but it is a part of who I am, a part that no one else sees. I think that's why I was thrilled that my wife did see that part of me and sometimes played into it. It made me feel genuinely "little" when I was diapered and regressing.