If I wasn't aware of what's happening, [publishing the IANA-maintained
MIB only on the IANA web page and not as an RFC] would violate my
principle of least surprise - having discussed a MIB for years, the RFC
suddenly pops out with no MIB in it.
On the other hand, I'm looking for the IANAifType-MIB -- is
it better for me to find RFC 1573 with values 1-54 defined,
or the version on the IANA web page with values 1-220?
If I'm on the Stockholm-Bangkok flight, and looking for the style of
interface MIB definition, or what the "sip" interface value means (it's
SMDS :-), it's certainly better for me to find RFC 1573 in my
RFC-archive-copy than to wait for the plane to land and look for the next
available timeslot with network access to do the work.