James, I agree with Rick on this. The fact that your W is opening up some is a sign of progress. Just do your best to validate without defending. And yes, letting the L's do the dirty work and what they are paid to do will serve you and your W well for the future if a R is in the cards.
Continue to let your W raise the topic of R or D. This way you are not coming off as pursuing.
I think I've seen it stated that if/when these types of conversations come up that you should make statements like - "there are a lot of things I would do differently if I had to do it over again" or "You are right W, I wasn't listening then, but I am now and I am working on being a better husband, father, etc.". All of these are validating and forward looking.
Me51 W53 S17 S14 M22 T25 Bomb-9/11; A-11/11; I move out 11/11
It's easy to find our bottom, it is our top that requires cultivation.
Every rough spot adds to our emotional constitution. -Barney Fife