The Configure icon in the toolbar allows you to change some System Settings parameters. You can change from Icon View (default view) to Classic Tree View or Sidebar View. In Sidebar View mode the welcome page shows the frequently used modules for quick access.
You can also turn off the detailed tooltips by unchecking Show detailed tooltips. You will then get only normal tooltips and not the content of a module group.
The Tree View has an option to expand the first level automatically on startup of the System Settings.