But I also like the idea of adding to tree in the settings section. But maybe there needs to be something more standardized for packages. Konstrukt appends it's tree item to the Settings tree group, Contentment adds a new Third Party tree group and I think uSync adds it's own uSync group as well.
Maybe convention should be to have a Packages tree group as default. But I can see the benefit of a custom tree group - eg. for grouping if you install multiple uSync packages.