I really didn't like the SuperS at first (I've only ever seen it as an adult, so I have no basis of comparison re: how a child might view the season)...I still find that the Amazon Trio episodes are largely unwatchable due to the "implications" of the dream mirror search (but it did give us taht gem of an episode with Minako's two timing, and Ami yelling at Mamoru over the mechanic became one of my favourite moments taken in context with her reaction to Seiya in season 5).
All the Chibi-Usa stuff leaves me a bit cold (I never was really able to relate to that character much), but I found that SuperS gets better on rewatch. There is some Inner Senshi character development in there between the lines, and it is nice to see them having regular lives between the craziness that happens in S and Stars. It's kind of refreshing in its own right. I found that by season Stars, the Inner Senshi characters are mostly fully formed, and it was thanks to their life experiences in SuperS that got them there.
In other words, I kind of consider SuperS to be like that awkward adolescent stage of growing up. Hard to watch at first, but gets better the further removed you are from it. Needs to be watched with a nostalgic eye.