I for one would like to see a Due the size of a Uno. I don't really care that I won't be able to use all the pins. Heck, most of my advanced projects don't even use all the pins of a standard Arduino. I however do need the extra processing power, speed and memory of the SAM3x chip.
If more IO is needed, I can always buy or build expander shields based on SPI, I²C or plain old shift registers. 