Could Site Engagement Serve the Same Purpose?

[johnwilander]

This has been brought up a couple of times. Chrome uses something called Site Engagement to understand which websites the user uses a lot. Could that signal be used to address the concerns about "logged in by default" and storage space?

One potential problem is that Site Engagement scores are neither accessible to websites nor possible to "set." It's an opaque thing from a developer perspective.

Replacing IsLoggedIn with something like Site Engagement also removes other possible use cases for IsLoggedIn such as helping users understand where they are logged in or allowing users to delete website data except where they are logged in.