First, version stacking. In the web app you can drop videos onto each other to build a version stack. Through the API I can upload files and read an asset’s versions, but I can’t create or manage a stack from existing assets: group them as versions of one, set the order, or promote a version to current. An endpoint to build a version stack from existing asset ids, reorder it, and set the current version would cover it.
Second, hashtag styling. When you type # in the comment composer and pick a tag, it renders as a colored chip. A comment created through the API with the same #tag text comes through as plain text with no chip or color. Hashtags created through the API should render the same as ones typed in the composer, so the styling is consistent no matter how the comment was made.
Both are things the web app already does that the API can’t reach yet.