Ungoogled Chromeum with browser syncing with nostr keys would be the ultimate browser.
Discussion
No, a nostrscript browser would be the ultimate browser
What is nostrscript? Problem with the web is everything that already exists is built around the chromium engine already.
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qg3waehxw309ahx7um5wgh8w6twv5hszrnhwden5te0dehhxtnvdakz7qghwaehxw309aex2mrp0yh8qunfd4skctnwv46z7qgkwaehxw309aex2mrp0yhx6mmnw3ezuur4vghsqgpjuxp8vd29p6ancknaztql3eajk52y8xkppfn7au7elkw9c68zg50lmkmd is building cool things, stay tuned for the next tgfn
out of the box thinker, that one.
I made a nostr extension for that. I use ungoogled chromium as my browser so I made the extension for that purpose.
Ooo link?!
Also works as a nostr signer if you want.