Wow, congratulations. Sounds like things are going well. Remeber that there will be set backs and fights. It will take time to rebuild your relationship. It will happen, but not completely overnight.
As to introducing playfulness into your sex life, that is hard. For me the scars of being hurt and the requirement to expose vulnerability were a battle in becoming playful. It doesn't always work. I wish it could be more natural, but it does get better with time and trust, with healing and forgiveness and above all with renewed mutual love.
Focus on what is going right, don't dispare when things go wrong and count your blessings on you and your spouses rebuilding your marriage. Good luck to you.
>43 years of marriage--My wife and I are now closer than we have been in decades. I believe that my SSM is over.