This is even worse here because there is the same community in multiple instances. Similar with seeing the same link or topic posted multiple times. In either case, some sort of grouping would be nice unless there is an extreme disagreement in different communities. EDIT, from another comment: it would be cool to swap different comment sections (link itself, tech take by user 1, etc) easier than an 'other discussions' tab.
Also it would be nice to have topic and language filtering.