Re: What to do when husband doesn't want to do anything to improve marriage
I advocate all of the feedback you have gotten. Instead of waiting for him to get on board with what you want, simply start practicing it.
Take him on a date instead of waiting for him to ask you (when you know he won't).
So now, for my practical side, based on my own experience. If you do take those risks, basically taking the role of initiating or being the changes that you want to see in your relationship, and he refuses to embrace improving the marriage, or belittles your efforts - then he's an a$$.
Go with what I call the nuclear option. Pack a bag and disappear for a few days. He is complacent. You need to do something to shake that up. If love and compassion won't do it, then absence is more than likely to get his attention. It throws off the balance of power - which is quite often needed. He will either acknowledge that his marriage needs serious attention, or, that his marriage is over.
This also means that you must to acknowledge the same.