I think you raise a number of interesting issues, and I just wanted to address a few points:
> I have never believed the boys were joined at the hip. As I see it, they are quite distinct personalities, slightly different interests, but a lot of common friends, a lot of common interests (shooting, polo, skiing, charity work) and a good understanding of the somewhat strange world they inhabited. I always saw the boys as quite close, though that was always going to evolve with time. Not quite sure what has really happened since, but a lack of willingness to work together is a very telling sign, IMHO.
> Fund raising for their charitable interests will always be a very key part of what they do. They may or may not like it, but that is just the way it is. The Foundation was a good way to bring some synergies to the fund raising efforts, as well as the administrative element of it.