As you know, I am working on bravedb.com … The purpose is to act as a searchable directory of Brave sites. During the process of building the site, I want to be inclusive of quality sites and exclusive toward contentless/junk/spam/spoof/innappropriate sites. This will be accomplished primarily via community involvement (phase ii stuff).
In order to be inclusive of subdomains such as community.brave.com I will add a feature to BraveDB to add them.
But it would be easier if Brave provided a subdomain verification api as well, even if it is solely for the purposes of Brave content discovery and nothing to do with rewards.
this post if you agree that official subdomain inclusion would be useful