A few years ago there were large changes in the API related to styling customization. To insulate users from the breaking changes, axis customizations were achieved through public methods. Lots of items (like tick length) are not customizable because public methods modifying them were not created.

Now that the API is stable, it seems like these configuration classes can be made public to let users more easily reach in and customize styling.

This suggestion originated from #2512 by @cxjcqu