A paper from Dirk Van Eester, Ernesto Lerch and co-authors has been recently accepted for publication in the journal “Plasmas Physics and Controlled Fusion“. This paper is entitled “Maximising D−T fusion power by optimising the plasma composition and beam choice in JET” and focuses on the heating aspects and was intended to give a qualitative assessment with almost “back-of-the-envelope” expressions, leaving out aspects such as transport and MHD which are outside our lab’s key expertise. It was purposely written before the actual experiments to help in the preparations and to provide basic intuition. Other papers (there is a wide list put in reference in the paper) focus on other aspects of importance such as the details of transport, the use of pellets, etc.