@ambreyes 

Hello, thank you for posting on the TP-Link community, and we certainly appreciate all your feedback and feature requests here.

Sorry, I am a little confused about your description. As you mentioned "the satellite router did not hide my main SSID (both 2.4G and 5G)" first, then "the main SSID and IoT SSID are hidden, and the guest SSID is visible."

As I know, the wireless settings of main router's main network can synchronize to satellite router. But now IoT network and Guest network does not support to synchronize to satellite router. If this is your situation,although we don't have any specific details that I can share around if these features can come to your home router, or when it might, I'll make sure to log this feature request and pass it along to the team.