Rumour has it that ICANN is considering another run of the new gTLD program.

Last time around, Google registered .app and runs it with an additional semantic: all domains in that TLD are automatically on the HSTS preload list, effectiely enforcing HTTPS for any server with an .app domain.

What if something similar were done with a privacy focus? For sake of argument, let's say .priv¹ is registered, and there's agreement that browsers will not allow any third-party requests from those domains. The registrar might also insert contractual terms that limited first-party tracking as well.

Sites with .priv domains could then beliveably market themselves as privacy-focused, giving them an advantage with privacy-concious users / customers.

This would also provide an opportunity for browsers to try out new techniques for privacy in a 'sandbox' that's already privacy-focused.

Just thinking out loud here - any interest? Obviously it'd need good browser support. Best path forward might be to define an opt-in signal for sites first, just like HSTS did.