[Ietf-not43] 3.2.4 Domain Information Lookup

[Paul Stahura]

I notice the data elements listed in 3.2.4.
I remember the old .com NIC Handles that were once common when there was a
monopoly.
Nowadays, handles to whois contacts are difficult to implement across
registries,
and even within registries in a distributed whois model.
But I was thinking that new registries in the future could use
the domain name itself as a sort of NIC handle.  
In the RRP registry we are implementing the whois information
could be nothing more than another domain name, in effect,
a pointer to other whois information. 
The list of TLDs allowed for the other domain name would be 
restricted to say gTLDs.  The registrant
of the other domain name is the registrant of the first domain name.
For exmaple, with this, you could specify that the registrants for 
ibm.newTLD and thinkpad.newTLD would be
the same as the registrant for ibm.com.
In this way the domain name serves as a "NIC Handle" and
works across registries.  
Would the specification preclude this type of thing?