The changes to the Starter plan in late April will present some new challenges in regards to organizing files. As most users under this plan move their work to the Drafts section, files will quickly become scattered chaos.
Possibly the simplest solution would be to allow project/file organization under Drafts the same as a Team. This would basically mean that Drafts would function as a single member team while the paid accounts would have access to collaborative teams.
Here’s a quick mockup: