I've always felt that the consultant care isn't that great beyond their power to allow me a pump/sensor!
A specialist nurse can be great re the practicalities of living with type 1 but in my area they just don't have a full team and many of those community nurses are dealing with the needs of type 2 people as well.
For example when I see my specialist he or she (and they never know me given the infrequency of visits nor have seen my sensor data) merely checks my hba1c, checks my insulin doses (self reported) , weight and lipid panel thus prompting a statin discussion. I find it stressful and unhelpful because they are dogmatic about statins (they get marked down if they don't get all of us onto statins).
What specialist knowledge have you encountered that was useful to you? Genuine question!