Feature Idea (one per thread):
Make Slices collapsible.
Issue that it solves:
When having multiple slices with multiple options it would massively improve the editor experience when being able to collapse slices. It's hard to find the one you are looking for, when you have like 10 or more slices.
Ideally one could define a field whose content should be displayed in the top bar of a collapsed / closed slice to it makes identifying slices easier (e.g how Sanity or Craft are handling this).