There is now a new form type called “Interactive Experience” for the Interactive Service Hub and when you customize this type of form you will see that the dreaded Social Pane/Notes component is gone and has been replaced with a new component called Interaction Wall. I could not find a way to configure the Interaction wall.
The ability to view the hierarchy for an account also seems to be missing. At the moment I am reluctant to use the interactive service hub until I am confident it is not missing currently available functionality.