Thanks Robert, that was worth reading.
It would be good if there was a protocol/standard practice (by the scientific journals/societies which determine what articles get published) of mentioning these four things (which the article highlights), to increase the usefulness of the research.
The more rigorous a study though, in many cases the more expensive it's likely to be. And in some cases increasing this type of rigour will mean more animal lives are used in the study (to get a larger sample size from which to randomise allocation, for example).
I think there are really two issues which only partially/slightly overlap, one is the value of animal lives, and two is the quality of scientific evidence that gets reported in scientific journals etc.