Rather than make a custom case, it would have been neat to see this PCB just slightly smaller that it'd drop right in the Blackberry 9900 housing to match the keyboard. There are loads of reasonably priced enclosures available that are already designed to fit selected keyboard.
What are the odds of the clear plastic being purple and green in classic Nintendo fashion?
That would be really cool! But we may not meet the MOQ to get all those colors made