I assume because of the change described at, the WASD keys are apparently all locked from customization in the 'keyboard shortcuts/customize keyboard' window.
Thanks in advance for your attention and feedback - I already know I'm going to love this one, like every Spidweb title. I've been messing around in the demo for a couple hours, and have a few game control-related requests which I really hope can be implemented in the final version of the game.