Highlights need a saving function so creators can keep their progress & work on their past streams later without risk of losing their work by needing to keep their browser open.
Also, the highlight processing has been an issue for multiple creators. When creators spend hours editing portions of a highlight & try to publish, an endless cycle of processing can happen.
Not sure if this is based off their own hardware & connection, but maybe bring video uploading back for all creators rather than affiliated.
Or create a draft function for saved work so users can save their highlight edits so they can be able to upload the finished work as many times as they want, just in case the processing doesn't work the other times.