I would like something like, each site by default gets a bucket by name. If cookies from another bucket should be shared with other sites, or might be seen whe

I would like something like, each site by default gets a bucket by name. If cookies from another bucket should be shared with other sites, or might be seen when requested by a cross-site load from another site, ask the user a four choice question. "Allow (site) to see cookies from (site)?" Always Allow, Just this time, Ask later, Always Deny