Nested Views, so that child views appear as menu items at the top of a view

My team would like to see a more intuitive navigation between related views, through a navigation menu at the top of a view.

This is a user experience improvement, which makes navigation between views more intuitive.
Not having to use the sidebar for searching for relevant views, but these being available at the top of a view.

I can imagine that this can be accomplished through

  1. either the implementation of a custom menu system/bar that can be enabled, showing at the top of any page,
  2. or a solution more focused on this particular need, which is showing related views as a menu automatically through their parent/child relationships. In this approach, views would need to become databases etities themselves.

I currently have to manually create links to related views like this, but it is a lot of work to create and maintain/update: