Even my one mare does fantastic while on the bit, but when I ride her solely in a neckrope there's a disconnect in holding herself properly and balancing as she likes to counter-bend, especially at the canter, without my reins to help keep her collected. She listens extremely well to all transitions and will halt on the dime and back up (although we're working on straightness there too), but I can't seem to get her to collect and balance properly without reins (more so at the canter as she is getting better at the trot and neckrope half halts). We're working on her balancing herself off of my leg, but there's way more work to be done.
I would really like to see some specific focus on working a horse long and low, getting them to properly lift their back, without the use of tie-downs.