While the new Zapier integration makes it easy (well, easier) to import CMS content into Webflow through a Google Spreadsheets zap, there's currently no good way to export that content in a structured way, without coding a call to the API. A CSV or XML download option, perhaps on the "Backups" tab of the site settings dashboard, would make it possible to do a lot of great things:
1) We could transfer content from one collection slug to another via Zapier, without manually entering every item.
2) We could demonstrate to clients that their content is not "locked in" to Webflow
An ideal structure would be one file download per collection, one row per item, with one column for each field.