I've drafted a heretical centralized approach that let's the user still be sovereign over their root key
nostr:naddr1qqgrxwfj89nrvepkxq6njc3sxf3n2qg4waehxw309aex2mrp0yhxgctdw4eju6t09upzqvr92hlwgse4s2ej7m2x7ydkgndr8zt9j5qk3y7hmgvvwh7hlhcjqvzqqqr4gu3jp7lg