I only watched the first 60 minutes of explanation and play due to time. I'll get it all in tonight or over the next couple of days. My initial impression is still hopeful, but not excited. I liked the art and animations. The concept of a D-n-D style knight vs traditional medieval knight is a win for the design team. The playfield layout tips it's hat to the originals just enough, while adding new things as well (the physical knight mainly).
As for play, the game just looked frenetic. I like Steve's philosophy of design with lots of flow and combo focus on his games. But flow doesn't mean loss of control. That was the thought going thru my mind as I watched...these are some great players and they look like they're flailing (no pun intended). The ball was moving so fast, most of the time combos were hard to come by. It looked mostly like shot...brick...wild rebound...shot...brick...wild rebound.
I know I saw only a small portion of the stream so far, but it didn't heighten my enthusiasm. I hope in the second hour, they find their shots and can hook a few together.