Sincerely the sole BeOS concept I found really nice that is also by some extent in NEXT is the "fs database" or the ability to "query" storage by file types etc

Sincerely the sole BeOS concept I found really nice that is also by some extent in NEXT is the "fs database" or the ability to "query" storage by file types etc vs only access in a classic files/directories tree. On package management IMO Nix and derived Guix are real revolution...