Currently series-wide extras/featurettes are ordered alphabetically and this order cannot be changed. It would be nice to allow for dragging/reordering the videos in the featurettes section.
You could include an index for the extras of each extra type.
There’s an existing suggestion asking for an option to edit an extra’s metadata, this could include assigning a sort title (deviating from the title displayed on screen) – or in what sequence the extra types are listed.
Though, that suggestion isn’t considering dragging extras into a custom order.
