

The ribbon was contentious but most people are familiar with it and it has advantages like taskcentricity and less clutter. LibreOffice has an experimental ribbon that I think should be worked on, mainstreamed and set during installation or in the settings.
UX in other areas should be improved. Lots of little annoyances add up for new users and can break their opinions. It’s not hard to look over the UI and see things which have no business being there, or should only appear in certain contexts, or could be implemented in better ways. I think the project should get some MS Office volunteers into a lab and ask them to do things and observe their problems. I’d have power Word, Excel, Powerpoint users come in and do non-trivial things they normally do and see where they trip up or even if they can do what they need.
Getting sand and bugs on their lips?