I'd really like it if there were a way to configure the charger to be propped up on it's side - the same way they store the watches in the drawers at the Apple Store. That way you could lay watches flat if they have the appropriate band, and let them sit on their side if they don't. I imagine they would just need an extra groove in the wood for the watch to lay in, and maybe a clip on the inside to hold the charger in place.
They could even make it so the charger will lay flat when pressure is exerted on it by closing the "book."