I'm not sure how widespread this desire really is, but I would really like to have more than one dock on the screen. Maybe allow multiple instances to run?
Also, if possible, I'd like to be able to reposition these multiple rings. For example, I have two monitors at work. I'd like to have one ring on one monitor for quick links to different work-specific apps and websites. On the other, I'd like to have more general apps and maybe a Reference document ring.