Loved the pod today. I enjoy the level of theorizing this season.
My only thought on Henry pocketing the address/paper was that it implied he would personally investigate it and learn that his father did finally succeed. So someone would know, even if Wayne forgets, and who better?
I noticed the tattoo also. I love that they never address it. I also noticed when Lena is testing her own blood you can see the vague shape of the tattoo on her arm.