I disagree about possibility to port MOS to the x1000. It would require time and resources that the MOS Team could better spend to work on MOS release for the PowerMac G5 instead.
MOS Team is not an enormous team, we all know this, so every hardware added to the MorphOS compatibility list take them about a couple of years (we're still waiting for Powerbook support..) so it would be very frustrating to see them waste a couple of years of development to support an overpriced hardware that almost nobody here would buy! It has no sense. I would prefer them to spend their development time to support hardware that we all can buy (read: PowerMac G5s..)