My personal experience with standardbred feet, is great.
My horse goes barefoot. He's only ever worn shoes when racing. He has BIG feet. I think this is very valuable as his weight spreads well and definitely is healthy. He's never had a foot problem before since he's been with me. My horse is almost 13 and he is 16.3. His size is lovely because although he was tall, he is narrow, allowing for a long leg. (not great for bareback tho OUCH)
His confirmation overall is fabulous. Thick legged and well proportionate. Unlike some standardbreds, his back is not long at all, its in fact relatively short. This is a personal trait though, not a breed trait.
I'm retraining my horse, and already he's cantering and jumping, bending nicely, and doing some basic dressage. ITs great
I plan to be working with standardbreds as my breed of chocie for a life time