I don‘t think the X5000 is needed for this or that most declared it was. The new concepts (64-bit, SMP etc.) can be very well tested on G5 Macs. Or which concept is it that can be tested on the X5000 but not on a G5 Mac?
So, the entire Morphos x5000 project in the context of usefulness is unsuccessful unless one wants to buy new equipment with warranty or like Jim is nostalgic. I'm a supporter of PPC, but I try to be rational too - such a computer for 2k is a bit too much, especially since we have G5.