I've heard so many perfection theories. The funniest one has to be from a trekkie in the congregation. For some reason, Star Trek is wildly popular in my congregation. I'm constantly hearing people talk about Enterprise. One of the trekkies gave this explanation:
They believe that since we will be perfect, humanity will create perfect technology, and will explore space with it. He was heavily implying that Earth would become very much like the Federation, and we would meet other races that Jehovah had created on other planets. His whole argument fell apart when I asked "What about the Klingons? If we met some hostile alien race and they had weapons, but we didn't, wouldn't they blow us up?" He nearly choked.
That leads to an interesting question. What about technology in the new system? What do they think about that?