I miss the hability to:
1) Set an editable Site Name to each connected site. It could take the name and tagline from the site (at the left side of the URL), but users could be able to change the Site name on The Hub, WITHOUT changing it on the WordPress Admin Dashboard (just for organizing).
2) Create Projects and add connected Sites to them. This would help to organize websites for different clients, geolocations, or even for different projects. Would give a very Professional touch to it.