Hang in there soldier. W may not notice them yet, but there are improvements you've made that you are proud of, and you should be. Look at your first paragraph and think of which of those you would have tried 12 months ago. No matter the outcome, you've become a better person and father, and that is important.
Random thoughts from your post:
From what I've read in the threads, if you want more veteran comments from the likes of MrBond, Starsky and Sandi, you need to start screwing up more than you have. They seem to take the cases where the person has no clue and there is nothing you've posted to give the impression that you are off the rails. It's simply a hard situation.
Have you thought about sending W flowers for Mother's Day and have the card read like they were from your D? I don't think this would be pursuing. You would simply being helping D show love. If you have her before Sunday, have D write a card too. It isn't pursuing, but showing D that one can express love for someone, even if it is a trumped up holiday.
You wrote what your 'love languages' are? What are W's? How do they align with yours?
Lastly, what are your thought on the following as either an addition to the list or a slight edit of your #6 'Discovering how to enjoy the small things':
Discovering what is truly important in life.
me: 45 W:45 M 20 years T 22 years S14, S13, S11, D9 BD 2/28/14 D papers served 3/3/14 I moved out 3/15/14 MC start 4/2/14 I moved in 6/2/14 D suit withdrawn 6/30/14