Sure, there will always be edge cases (including Power Users) that just don't fit the main model.
I think perhaps our focus has changed somewhat recently as we're concentrating on native iOS and Android clients rather than refactoring Share to be "touch compliant" (although our UX team have done some research in that area). There doesn't seem to be (or at least I haven't yet seen…) a good answer for providing a native-like web experience to users on each platform. By that I mean allowing the user to intuitively know how to use a UI control appearing on that device, having the tool- and tab-bars at the top or bottom of the screen, etc. rather than having to change mindset into "Alfresco's web mode". This might well result in more development time and managing multiple code branches, but we'd rather get noticed for great UI rather than forgotten as "not as good as the Dropbox app" for example.
Having said that, a more hybrid approach will become more pragmatic in the future. And looking at such apps as Facebook and LinkedIn there's certainly a good middle ground. I'm just not sure we're quite there yet (e.g. notice the lack of LinkedIn iPad app).
Mike