Thank you for reaching out. The ability to freely rearrange Collections is planned but cannot commit to when this will be available at this time.
Can you please explain what you mean by sub-categories ?
I'm going to guess at what Phantom is saying (as I think it's the same update I want, but Phantom correct me if I'm wrong) but I'd love to be able to have a second container under collections that I could expand/collapse. This could look like:
Collection: Ship exterior
Sub-collection: Dialogue
Write for Character A
Write for Character B
Sub-Collection: Visuals
Visual Asset for Character A
Visual Asset for Character B
Sub-Collection: Music
Talk to Musician
Send money for invoice
Add File
Hopefully that helps convey our (my?) point.