Not related to "promised features", but what about making a tab or separate section for forgotten features that haven't been updated in a really long time? #4
I'll look into it! I do want to add some features (eg: make cards collapsible, navigation menu, some more integration w/ screenreaders), so this fits right in.
For example, dungeons haven't changed at all in the past 10 years, they're still the same old boring cobblestone rooms.