I find it very cumbersome to edit existing keywords on existing/already accepted content as one can only input keywords one-by-one and there is no copy/paste possibility. Would it be possible to get the same feature that you have when you upload, also with existing content, i.e. the little slider to choose from list of keywords or a field so that one can "delete all", copy from LR and paste into a field, then rank them in a list?
"Dream" would naturally be to have a fully Lightroom integrated plugin that would sync any amendments in metadata to uploaded content. This exist for other agents, so definitely a possibility.
Feel free to suggest that feature.
Request duly noted.