I like many of the updates, but other's don't make sense. If you're in full screen mode it doesn't make sense to have the exist editor back to the posts gird be the WordPress logo when in the past it was a left carrot. It also seems that adding new blocks is much more of a manual process. The add new block button doesn't show up except after the last block on the page. The drag and drop has also been changed in a way that manes it more manual, which is the only option of you have the editor set to Top Toolbar.