I'm testing this right now - it is the next thing that I'm building. However hubs don't provide landing pads and are not ports (from what others have been saying, and the pictures in the game UI).That's because there are Refinery HUBs. Not T1-s, T1-m or T2-l settlements.
Id like to see T3 settlements sometime. Not just a port. This update has the capability of building upon the system economy. So being able to upgrade, demolish and rebuild would be a welcome improvement when it's out of beta.
The most likely outcome will be that I have a functioning Industrial outpost (also built, but only selling three things because it is missing a refinery that can process my extraction sites).