One thing I really appreciate about ncdu, that seems to be missing from its work-alikes (gdu, pdu,etc.), is the option to export scan results to disk & import them later. Not a feature that helps every day, but extremely handy sometimes.
> Exporting an in-memory tree to a file. Ncdu already has export/import options, but exporting requires a separate command invocation - it's not currently possible to write an export while you're in the directory browser. The new data model could support this feature, but I'm still unsure how to make it available in the UI.