With the closing of the pavilion, I have to ponder, what went wrong? Although I cannot say I was personally a fan of Body Wars (since it was the same ride system as Star Tours), but I LOVES Cranium Command. It was truly a family attraction that everyone enjoyed. On my last trip, I got to see it. After it was over, the family behind me, said, "Wasn't that a fun?" I think that the attraction exceeded their expectations. That is always good!
Personally, I think WoF demise was a combination of factors.
1) Poor location It is hard to find. After entering the park, you have to walk back toward the entrance for quite a distance before you find it wedged behind Universe of Energy. UoE does not get the draw it used to to get more people to WoL. If this pavilion was next to Mission: Space, WoL attendance would quadruple.
2) Lack of updates It really needed a face lift years ago. The first time I saw it, Met Life was flying their mini-blimp through the pavilion. It added life and motion to the place. People were interested in the shows there too. The pavilion needed a new look and a new ride, to replace Body Wars, and then it would have been more successful.
The human body is such an interesting topic. I still believe that with some imagination, creativity, and a better location, it would be a hit pavilion.
If there was a clear path from the entrance to the left (instead of going through the innoventions area) then people would naturally start at this area of the park. Space can be a curse. Epcot does not use its space economically so it feels like you are walking large distances to get to the next attraction. I am afraid with our modern, over-weight American, that people generally take the shortest distance and skip things if they feel it is not worth the walk. If the trip was closer, they would check it out, especially if it provided some air-conditioning in summer or shelter in winter.