I started Glom's Reports feature. So far it does simple “by” reports, though I still have to add the summary (sum, average, etc) part. I'm fairly sure this is all most people need, and they can use Postgres directly if they have more advanced needs.
The appearance can be improved by changing the CSS, and/or changing the XSLT that produces the HTML.
That's probably the last big check-box feature for Glom, though I've added so much new functionality recently that there's certainly many bugs to be fixed.
But after spending four months working intensively on this, it's time I looked for more freelance work to pay the bills for a while. Of course, I'd love for some company to sponsor further work on Glom, so I can use my time sensibly.