Zander said he might work on the Icon Library app
That Read It later app is a great idea!! Would love to work on that as I experiment with Rust. Do you have any mockups for it?
A GNOME port of Ciano ("Converter"?), should be fairly easy to rework the Vala (disclaimer: haven't looked at the code) to remove granite and the other elementary stuff, main sticking point is design (cough @bertob cough)
Edit: Curlew is another possible base, basically i just want to be able to convert videos without using CLI, elementary or cloudconvert.com