Eslapion about DDR:
...Amiga it would probably cost no less than 100'000$ to develop. When you can spread this cost across millions of units you know will sell, that's not a problem. The Amiga community doesn't have such a large user base to justify that.
$100000 for development sounds a bit pricey, i don't buy that. Maybe some $1000s is more realistic. How about SDR-SDRAM, which is a bit more simple to interface. And a bit more expensive, unless bought second hand.
It wouldn't need many parts: One PLD, one (or more) SDRAM-socket, a printed circuit board and some capacitors, resistors, and a voltage regulator or two.
