I don't think the previous expansions were better, for example...
On the other hand, there are still a number of works that both evoked and continue to evoke the same warm and positive impressions in me, even when re-reading/playing/watching them, even 15+ years later.
Regarding the early expeditions, it's difficult for me to say definitively which of these applies more. Perhaps, there was a successful mix of both (and even some real-life factors) that allowed me to create a very warm and fun atmosphere, which has remained in my memory for a long time.