Hello Kate :)
I think private circuits such as the Longines Masters offer a different vision of showjumping by adding a real entertainment to shows and creating new types of classes.
It also contribute to the evolution of the sport and its exposure. Some circuits such as the Global Champions League get closer to the functioning of other sports, making showjumping more understandable for the public.
Of course these shows can't replace shows like the nations cup, I think they are complementary !
What's your opinion about it ?