Perhaps an additional discussion point would be the advantages of using CVtree approach with regular concatenated proteins.
L156–166. If I understood right, there was good support for Candidatus Aciduliprofundum as part of a clade called DHEV2, which is a sister clade of Thermoplasmatales. However in the present work the authors intend here to reclassify Aciduliprofundum into family Thermococcaceae of Thermococcales. This needs further explanation. Since the new affiliation is quite in disagreement with previous observations, and this is not properly justified in the results/discussion, the final statement “this modification would hold as long as no new facts challenge it” seems unacceptable. In addition, why should Aciduliprofundum be regarded as member of Thermococcaceae and not as another distinct family?