He's just been amazing, frankly. I am getting a much better connection, and I can feel that he's through and working over his back. He doesn't take the right rein as easily as the left, but he is much more even in my hand than ever before.
His canter is getting more and more collected too, and the downward transition to trot is spot on. He can almost canter as small a circle as I want. In fact, that's how I am schooling the canter to walk transition. I get him sitting as deeply as possible before I ask for the walk. That transition still needs work, but the walk to canter is pretty reliable.
I don't think Speedy G is going anywhere.