Biometrics, I don't know where you live, but I remember that same line of thought that in the end days of the "end days" there would be people lining up for studies on the Kingdom Hall porch.
I worked on a Kingdom Hall with 300 seats in it. Afterward, It was always half full, except for the memorial, it was still comfortable but you could still find a seat, but it was full, AkA reaching capacity. Personally, I liked having a whole row to my family.