I have done a review of this document as part of OPSDIR. I think the document is ready with nits.
Since I am not fluent with CDDL I cannot say much of the correctness of Appendix A examples.

Editorial comments:

IDnits reports
  ** There are 31 instances of too long lines in the document, the longest
     one being 11 characters in excess of 72.

   These are likely Table 7. The long lines can be worked out with some effort.
   The words can be cut or abbreviations can be used.

Line 17: s/suit/SUIT
         The rest of the document seems to use SUIT not suit.
Line 99: Expand AEAD ("Authenticated encryption with associated data") on the first use.
Line 113: Expand AES-CTR on the first use, since it is also used on body text not only in profile
         tabled under a specifically referenced document.
Line 263: Expand HSS-LMS on the first use, since it is also used on body text not only in profile
         tabled under a specifically referenced document.
Line 330: Not necessay expand again SUIT as it is done already in the abstract. Use just SUIT instead.
Lines 335-363: consider making the table less wide. For example, columns 'reference', 'encryption',
          'key exchange' and 'status' are easy to take few characters away from each.
Section 6: Earlier the algorithms listed in the table were referred as MTI algorithm. I would add
          such language in this section, not just saying "A recipient device that claims conformance to this 
          document will have implemented at least one of the above algorithms."
Line 449: Expands CDDL on the first use.