Maybe we can build on top of HTML but only allow a restricted subset. Something that will allow pages to load fast and avoid obnoxious advertising. How could we

Maybe we can build on top of HTML but only allow a restricted subset. Something that will allow pages to load fast and avoid obnoxious advertising. How could we get people to use this subset vs. pulling in other parts of the web we don’t like? We could create a validator for that subset and make certain web properties exclusive to content which passes that validator.