As a JW, I always imagined that we'd all be self sufficient in the new system and there would be no need for finances or commerce. There would be no need for human leaders as we would be perfect and without need of regulating and organizing because we would all be doing the "right thing". I never paid attention to the fact that the folks at the Watchtower have the idea that they'll be in charge. If that's the case, we'll be building houses that they approve of and painting them from a selection of approved colors.
The one thing they never addressed is the literal reality of living for all eternity. They always seemed to focus on the early days in paradise, rebuilding and instructing resurrected ones. What about 10 years later when the work is done and the rest of eternity lies ahead?
I was also bothered by the fact that we all came about so randomly. If our parent's had "gone to bed" a few minutes earlier or later, some other little sperm cell might have made it to the egg first and we might not even be here. Although we had no say in the matter, we were the ones who made it and if we became Jehovah's Witnesses or were resurrected, we would live for all eternity and had no choice in the matter.