I've been working a PICaxe platform module. I did a V1 a few months ago, and recently re-did it. Here's a prototype of V2;
I've used the same power stage as the Propeller Platform sD - it's 5v @ 1.5A and 3.3v @1.5A with an extremely low dropout of 100mV. Standard power and programming jack, and it has power indicator lights.
I need to make a few changes, so I thought I'd get additional feedback.