Taking a page from Apple's iCloud Private Relay and TOR's onion network, I wish to suggest that Proton partner with another trustworthy provider (such as Mullvad or IVPN) to use their servers as 'exit nodes' in an implementation that would separate activity from identity. This would, of course, be for the benefit of reducing demanded trust in Proton (or their partner), and the 'no logs' promise, ensuring greater privacy by design and not just by policy and practice.

This isn't Secure Core.

I figure it's important to clarify how this differs from Secure Core, which is already a 'multi-hop' connection. Secure Core uses Proton's own tech, end-to-end. This means Proton still knows or has access to both your identity and your activity. My suggestion would mean Proton only knows your identity, but not your activity. Ultimately, my suggestion aims to tackle a different threat from that of Secure Core (which aims to protect against compromised servers).

Why this matters.

Proton's trustworthy. At least, I find it to be sufficiently trustworthy for me to use their services. But Proton Mail isn't good because Proton promises not to read your emails (alright, that too), Proton Mail is good because Proton cannot read your emails. This suggestion advocates for a similar approach to Proton VPN (in that it cannot read your activity with this option enabled).

If you like my suggestion please vote for it, share it on social media, and get more people to vote for it. This is likely the only way it'll receive attention from Proton. Also, feel free to let me know what you think of this suggestion. I'd like to see more thoughts and opinions on this.