We're trying to get some IO expansion for Raspberry Pi. We're starting simple and then adding more later. Since the Pi was originally to teach programming we're aiming at those people, but I think hackers have some interest too.
The first board is has a couple of relays, a few flashy lights and switches, 8 open collector outputs and 8 inputs. The prototype has gone off to be manufactured, and if all goes well we'll be sticking a bigger order into seeed.
In the meantime here's a high quality paper render. ;-p
What we'd like to know is what do you think should be on a board?