It should be limited in scope so as not to become a lot of work. I don't see the point in doing fine grained analyses of clinical trials.
For example, on the topic of diagnostic criteria it could say that one with postexertional malaise should be used.
For treatments it could say that currently no treatments have credibly demonstrated an effect, briefly explaining the issue with CBT/GET studies, as well as mentioning specifically the lack of effect of antivirals.
Other topics could include orthostatic intolerance, epidemiology (yes it can occur in kids and it can be a frighteningly severe illness). Also clarifying that PEM is not an ordinary reaction to unaccustomed exercise.
It should also say something about the lack of evidence for the BPS model that claims the illness is perpetuated by psychological and behavioural factors.