In 2019, LibreOffice's Design community @liboDesign worked on the NotebookBar user interface, along with menus, icons, the sidebar, a "Tip of the dialog" box dialog and much more. Discover all in our Annual Report: https://blog.documentfoundation.org/blog/2020/06/24/annual-report-2019-updates-from-the-design-community/
@laila @libreoffice There is quite a bit of debate over that as far as I know. While I think it's understandable for different people to have different tastes, #LibreOffice should make it more clear to new users that different UIs are available for it. Perhaps, a 'first-run wizard' that asks which UI you want to use might be a great way to achieve this.
@sudo @libreoffice I agree, this 'first-run wizard' is a great idea. Please do it @libreoffice