6. Common Code and Interfaces
Unlike MSO, LibreOffice is not a collection of originally separate programs grouped together by branding and a few interface choices. Instead, LibreOffice applications were designed to share as much code as possible.
This organization means that a LibreOffice installation occupies less hard drive space than an equivalent MSO installation, and is generally faster on the same machine. In these days of multi-terabyte hard drives, that may not matter on a workstation, although it could still be an issue on a netbook or lower end lap top.
Even more importantly, many dialogs are the same between applications, which makes learning easier. For example, windows for formatting text or its background in styles dialogs are identical whether you are formatting a text document or a spreadsheet cell.