An anonymous visitor at https://permanentfuturelab.wiki/wiki/Permanent_Future_Lab:VisualEditor/Feedback asked for a copy function in table rows. As far as I know there is no function for it yet. Love to see a cut/copy/paste for table rows & columns.
Topic on VisualEditor/Feedback
Hold your breath, https://phabricator.wikimedia.org/T85791 (which I think is relevant) is tagged as "patch for review".
Major improvements to table editing, including drag-and-drop rearranging of tables, is on the way, but it's probably going to take a little while yet.
Great to hear it's already on its way. I'll be patient and looking forward to it.