stravos: first: sorry i try not not to do walls of text. i also tend not to read them. life is short.
can you please elaborate a bit more regarding your concern on the concentration of authority? Let me ask you quickly a question: Aren’t we doing this already with RPKI system?
somewhat over twenty years ago, when we were designing rpki and its initial uses, i pushed strongly on this issue. unfortunately, non- hierarchic trust research lagged, and still lags, hierarchic by decades. so much for web of trust. the ip resource alocation administrative *authority* is hierarchic, iana, rirs, lirs, ... the irr authority is not necessarily a hierarchy. i trust NTT because they have proven to be a trustworthy peer, not because APNIC says to. and lastly, the rpki does provide for and encourage CA distribution. unfortunately hierarchic, see above.
it had 5 root TALs only
it was designed to have one, iana randy