I thought the stones were a neat concept, but they overdid them. If I had had my druthers there wouldn't have been any stones, or if there had been, the effects of using them would be more deleterious (sp), to prevent common use. I think the stones minimized the sense of isolation, loneliness. I think having Universe cut off from Earth was one of the things that made it different, but similar to Atlantis, they reestablished contact with Earth quickly and I think they lost something as a result.
I wouldn't have minded flashbacks but not overdoing that either, like the Event did at first.