Recognise and reward the relationship between great teachers and real scholarship.
The little international research there is on what constitutes excellence in subject specialist teaching at secondary level, all agrees that a teachers' passion for their subject is critical. Teaching at this level is not a generic exercise and those few "teaching" skills that cross subject boundaries have minimal impact on how a child responds to the subject taught. In sharp contrast, the depth of knowledge, passion and even love for the subject that a teacher exhibits, has a huge impact on the child. Teacher training should reward and stress subject scholarship instead of wasting time on superficial, pedagogical skills development.
Ivor Hickey commented
Although 'passion for their subject' is undoubtedly important in presenting a subject to students, it is clearly not the main factor in encouraging children to take up the subject in question. Influencing young people to want to know more about a topic depends mainly on teaching skills such as how much information to supply and how much to ask the learner to contribute. This is hopefully developed in pedagogical training.
Nick von Behr commented
I see where you are coming from but think your argument may be a bit extreme - pedagogical skills are clearly valuable. Saying that I'm conducting some research with a colleague for the Royal Society of Chemistry on subject specialist ITT in a range of countries, so it will be interesting to see what it produces in relation to your main point.