Arduino Mega2560Pro case/box/thing

So I needed more Arduino memory for a brewery controller project that I parked in 2011. Originally I was using an Arduino Uno which was well up to the job. Then I added to the code and now the compiler tells me it has all but filled the memory available at run time.

The Arduino mega, the next logical step up, has 54 IO pins and 4x as much memory as the Uno and is huge. When I looked for a bare bones kit list/design it clearly won't be possible as the MCU is a QFN (quad-flat no-leads) package