Currently the artefacts are listed in a list one per line in the Blue Ocean view.  This is usable when there are only a few artefacts probably all at the same "directory" level.

When artefacts can be many 10s or even hundreds and exist in a more complex folder structure, listing them one per line just doesn't scale.

It would be good if these were collapsible and navigable the way they are in the classic interface as a tree structure.