This is an OPS-DIR review of Guidance for External PSK Usage in TLS <draft-ietf-tls-external-psk-guidance>.

As its title indicates, this ID provides guidance for the use of pre-shared keys with TLS. Guidance documents are inherently useful to operations community and this is no exception.

I found the document well written, slightly repetitive as Rich noted, but not so much so as for it to be an issue for me. 

A few notes though.

in section 4.2 the term PAKE is used without any definition – there is a reference to a document but it seems to be that at least expanding the term in this document would be useful.

the document uses the term SHOULD in a number of places.  (e.g. multiple places in section 7 and one in section 8) – for what its worth – I am not a fan of the use of this term unless the text also says when not doing what the SHOULD says to do is OK – i.e. since SHOULD is a MUST with an escape clause – I think it is useful to actually say what the escape clause is – i.e.
explain why this is not a MUST.  (also it does seem a bit funky to say (as section 7 does) “MUST adhere” to requirements 
which are SHOULDs )