What TMHG propably means it is simply crazy to build custom hardware based on PPC in 2013. It was perhaps a good choice in the nighties but today it is completely unrealistic. Propably (from my point of view despite the efforts needed) MorphOS team will change to ARM or X86/X64 too. AROS is already there. Hyperion and e-on will stick on PPC forever because expecially Hyperion has no resources for the needed change and they would expect someone else to pay for the port (what nobody will do, propably not even Trevor). What the choice of processor... I am self-employed and have to do with small to medium companies, for a company it is critical to easily replace broken hardware, one reason why this hobby system would have no chance to be sold to professionals (besides of price, missing software and so on).
Hardware creation (including needed drivers) is expensive and complex, one reason why custom hardware is not competitive today. Custom hardware only makes sense if it offers real customer value, X1000 or similar does not offer that (at least for the vast majority of potential buyers) and is much too expensive (and "much" is here the polite phrase). I had contact to a number of former amiga-developers (mostly former AmigaOS users) who gave up after the old hardware broke and were not very happy about the strategy and direction. It is a pity that people leave the platform completely instead of changing to MorphOS or AROS.