Nested folders
With the current collections capability, it looks like collections don’t have any organization within them. If you wanted to organize things into “folders” within your projects you’d have to title collections all at the top level with a naming that implied a hierarchy in order to map shared items into groupings one layer of organization down. Something like:
Collections:
Project1-folder1
Project1-folder2
Project1-folder3
Project2-folder1
…
I would have preferred to build an arbitrary folder tree and place shared items into specific places in my folder hierarchy.
Obviously it would be more useful if this organization was available in Box Drive too.

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Anonymous commented
I agree 100%. I actually hate using box, and this lack of nesting functionality in collections is the primary reason why. A lot of coworkers have shared their content with me, and it's EXTREMELY difficult to keep it organized within the limited Collections functionality.