Foxfield and yes, amazing. They even performed at the 1984 Olympics. And many of the rest of us practiced with a wire at home.
There’s a video going around with a rider doing upper level dressage in a rope halter.
A bridle isn’t a bad thing and not all horses do well bridleless, especially not in scary situations. I’ve had some that take to it and some that don’t. But I do also love it as a goal, and I think my current horse is one that will enjoy it.
I’d like to see judges be thinking more about what makes horses happy and comfortable, rather than simply what is expressive and powerful. And I’d like to see a ruleset that considered both bits and nosebands optional. A bridle creates more clarity of communication but if you don’t think you need one, who am I to say you do?
In the 1980s the Foxfield Drill Team was mostly greys but here is a video of a more recent performance:
https://www.youtube.com/watch?v=Cm3LGoCpbus