We're keen on getting good offline support added, but (as you point out) there's still a lot to be done on the web side of things. We're pushing out some big updates that hopefully clarify the project and how to use it in a couple weeks.
Welcome to ideas on what good offline support would look like, or PRs if anyone wants to take a stab at it.
Our goal is for PubPub to be a public utility for scientific communication. It'll be non-profit and open source for as long as it lives (still a grad student project at the moment...) and free for anyone to publish whatever they like. I don't think we're nearly smart enough to know exactly what that looks like, so please do feel free to contribute ideas, code, or inspiration into what a public tool for science communication should be (this comments page is already wonderful in that regard).
If anyone is serious and passionate about helping out, we're hiring!
But I really hope I can contribute as a user in the future :).
– PubPub doesn't seem to have math support, is that right? I think that should be a very high priority.
– LaTeX import is also really important (but this supposes that math is supported), is that on the roadmap?
– Related question: is there a way to work offline in my usual text editor and collaborate with my usual tools (git, svn, whatever) and then import my paper in PubPub?