Declutter the entity display by grouping fields in collapsible field groups.
Currently the fields, especially many to many relation fields which cannot be hidden, are taking up a lot of space and is a big UX tension.
In general, I see that users (including myself) work mostly with title and richt text content of entities.
Although Fibery apears more structure oriented, day to day work with Fibery requires a lot of clicks and the fields are a big distraction. Drupal solved this also with the field groups module.