My wife and I are doing exactly what you are looking at, as she has the same specialism you and has advised, coached and provided me with the nutrition to a so far successful outcome. If I can be frank, my diabetic team has not been instrumental in my progress due to the current mantra, which is a shame because they are "nice" (no pun intended) people. I would have liked the option to either do the Newcastle Diet and or LCHF from the start; rather than what I did which was watching sugary items, but not knowing carbs are effectively sugar, so having to cover this off with extreme workouts.
At my education course there were 2 professionals, 1 of whom rebuffed the feedback that I gave that HiiT exercise reduced my blood sugars (even though my meter told me otherwise); it is sad that neither the dietary (correct) or exercise were pushed, and I fear due to guidelines many diabetics are suffering needlessly.
From my perspective as a "sports fanatic" definitely and major gap - I would advise customised and overseen programmes based on the person; no point giving an 80 year old a HiiT and heavy weights session, when walking maybe twice a day would be better.
When we extend my wife's Physio offering, we will be focusing holistically on the person. My wife has already changed outcomes of secondary issues of non-diabetics by for example getting them to make their own bread, drinking more water and through improved health reducing medication. I have noticed that intervention based HCP's seem well geared up to become the best Diabetic / Obesity specialists (e.g. Dr Fung, Halberg etc). I think this is because they see patients with multiple conditions so can see the links between several conditions. Hopefully you are on board with "our" contrary views i.e. LCHF, fasting and for some exercise, I do know you are well placed on the psychology.