You have yet to plunge the depths of moe.
Honestly I think Mome from Orguss rates higher than Ranka.
When I was at Anime Boston, I showed off the "hidden" Itasha Ranka Lee cover for the VF-25 Master File to some people, including a Ranka cosplayer. She said she loved Frontier and Ranka but didn't care too much about the robots :3
:3
Honestly I don't think we can leave out nostalgia entirely as in my experience, many old school fans are rather willfully ignorant of the kind of things that were commonplace even during the golden era of the 1980's.
I feel like some are overestimating the number of "magic bullets" for general audience appeal that can come out of Japan at any given time.