Over time the unitary root of naming has attracted increasing levels of censorship, tracking, abusive seziure, and oppression.
The dream of a worldwide namespace has become a nightmare. Let's wake up.
Otherwise your proposal lacks the context to decide if it's a worthwhile tradeoff or not.
This is one place where a significant proof of work, along the lines of Namecoin or handshake.org, would make sense. (Another place is password hashing, for example.)
All of that is due to their mistake of trying to use a sessionful protocol for their DHT.
Bittorrent got this right -- sessionless DHT -- which is why IPFS remains a rounding error compared to bittorrent, and will remain so until they adopt a sessionless DHT.
Also, whether there is one namespace root or many, we all still live in a single world.
GNS, in theory, could replace DNS (the technology) and reuse its current root governance model as default.
From the point of view of GNS namespace governance is separate from name resolution protocols. Of course, from the point of view of a lot of DNS folks, DNS is both: The governance (ICANN) and the technology (RFC 1035 et al) and indivisible.