I would not necessarily agree that dumping the dual-CPU models would be akin to "dumbing down".
The dual-CPU model is a left-over from the G4/G5 days when Apple CPU's seriously underperformed compared to the Wintel competition.
Now that we get the same hardware, I'd argue most people would be better of a with a single hexacore than with the dual quads.
Furthermore, not a lot of software takes full advantage of multiple CPU's under OSX. At least, not that I'm aware of, the few real-world benchmarks out there seem to corroborate this.
The dual-CPU model is a left-over from the G4/G5 days when Apple CPU's seriously underperformed compared to the Wintel competition.
Now that we get the same hardware, I'd argue most people would be better of a with a single hexacore than with the dual quads.
Furthermore, not a lot of software takes full advantage of multiple CPU's under OSX. At least, not that I'm aware of, the few real-world benchmarks out there seem to corroborate this.