Here some suggestions from one that use DPS platforn regulary...
1 - Content panel filter by Collections or shows in chart in which collection(s) each article is applied.
2 - Collections panel allows edit metadata from articles, collections (inside collection)
3 - Layout Template - great feature and will be better when allow change the metadata article from Mapping panel
Agree with all these and they have been requested previously by myself and others.
The Content/Collection areas of the portal need a lot of work to be a proper production tool for publishers of regular, magazine content (ie: 200+ articles every week or month). Many of the features from Folio Producer and Editor should be ported across.
Improved listing details / select all / more info on main lists (device / layout ) / editable content within collections / multiple drag and drop for order / etc