One of your competitors has a very neat feature, where you can set out sections for your research project then drag-and-drop literature into those sections.

At the moment you guys have folders, but from a citation it's impossible to tell which folder it has been assigned to (if any). This slows down doing quick, initial literature scans, because it's hard to tell if one has already looked at a paper and assigned it to a section of a project, or if the paper is new.

At the beginning of a project I'll start with a literature search with potentially several hundred citations. Being able to quickly categorise these would be really helpful: we are doing research projects, so having the citations managed in such a way as to match the project structure seems natural enough.