Interesting perspective indeed. From the conclusion (reordered to put most relevant ones to SAFE at top):
The following is a list of potential improvements that we invite the
QUIC Working group to take into consideration, wishing for the
protocol to have even greater positive implications for human rights.
Examine the opportunity to translate the QUIC specification into
Discuss the viability to make tooling for running QUIC servers
Observe and iteratively assess the implications of QUIC on the
power relations between end user on one end of the spectrum, and
network operators and service providers on the other one.
Consider deploying IP header encryption as an optional extension.
As the QUIC Working Group is expected to deliberate on the
potential inclusion of the spin bit in the main specification of
the protocol at the upcoming IETF103 (November 3-9, 2018), we
suggest to consider not to include it. Our recommendation is
motivated by the concerns raised in regards to its implications on
user privacy, as reported in this very document, and also shared
by some of the interviewees.
Evaluate the addition of language tagging and charset
identification in the case of Reason Phrase in the
CONNECTION_CLOSE and APPLICATION_CLOSE.