Seems like the WG needs to figure out whether they want to allow or
prohibit compression in SIG and NXT.
the question is, whether compression of the names buys us enough octets
to pay for the complexity of a strategy like "you can use compression if
using this data in an EDNS0-signalled proof, but not in response to a
normal query or transfer". my own thinking on this is, "not." that's
because the names aren't always going to have similarities with other
names in the same message (making compression nonbneficial), and also
even a successful compression delta will be dwarfed by the size of the
signature and key data (making compression irrelevant overall).
I was going to argue with Paul until I saw the above paragraph.
Compression in these two records is not worth the cost needed to be
able to do it.