I need to correct my own answer. We are not planning to implement bulk Host settings update via GPO. Rather, we are planning to implement our own centralized policies (using self-hosted server) feature.
However, you can already mass-update Host settings using GPO. Just export the Host's settings registry key and they propagate it across your remote machines using GPO. The key is
HKEY_LOCAL_MACHINE\SOFTWARE\Usoris\Remote Utilities Host