In the '80's there may not have been a US Ice Princess but there was a lady who (whether you love her skating or not) transcended boundaries and was nearly always fascinating to watch--and her name was Katerina Witt. From 1984 and for the next 10 years, I can't begin to count the number of US skating fans--including lots of red-blooded males--who had no problem sitting down with a tall cold one and a competition with Katerina in it, first eligible and then pro. They knew about her more than most of the US lady competitors. That their interest wasn't necessarily in the skating per se is beside the point--they were at least tuning in and watching. And this was a time when figure skating only had TV coverage of the big events (cue ABC's Wide World of Sports music here). Katerina wasn't necessarily the most technically proficient skater but she had presence in spades and a broad based appeal across a lot of audience demographics. And like Michelle, Katerina was a ferocious competitor.
Two points: 1) Right now, post-Michelle--there is not a Larger-than-Life presence among ladies' elite skaters that can singlehandedly pull in US live show and TV audiences. Not a US lady nor a lady from elsewhere. I look out there and don't see anyone with that "IT" factor....yet.
2) Most casual fans want to see LADIES (or at least women

)skating and not pre-pubescent girls. I think this cuts across nearly all adult demographics of gender and age group. This tends to support not lowering the minimum age for senior competitions.