The Mega was released as anticipated so I didn't see any point in continuing the development of the dCore. It proved a couple of theories during its time, like the shared oscillator works flawlessly, and that there was an inexpensive means of adding a second UART to a 168. If you develop any further enhancements then I'm sure there'll be those in the community who'll find a use for them.
Sounds promising though, has anyone figured out what it does?
Thanks for the information. I'm probably of a similar mind to ill_switch and am happy to add additional 168's / 328's if one isn't enough, and your hand held gaming platform sounds like the kind of fun project people here would enjoy.