This thread has dropped into the stupid old Red V Blue debate.
To address the OP, yes a PPC mac port would be nice. However...
Point 1. Other than the old moana project, there's no OS4 for PPC mac.
Point 2: Hyperion have said on multiple occasions that there are no plans for a PPC mac port.
Point 3: MorphOS runs on an ample cross section of G4 class PPC macs that are available at a reasonable cost. Moaning that it doesn't support a particular machine my might already own isn't likely to help you any.
Point 4: Trolling and flaming are a violation of the TOS.
Point 5: Thread closed.