I'd take a MacBook Pro a pound heavier and several mm thicker in order to have more RAM.
I'd also gladly accept 5 hours of battery instead of 10 (or 2 instead of 4) when 95% of the reason I want a laptop instead of a desktop is not to unplug entirely but to shuttle it between home, work, the coffee shop, my desk, the couch, etc.
It used to be that enough of Apple's customers were using their computers for workstation-class workloads (photo and video editing, software compilation, data processing) that there was good reason to provide us a workstation-class portable, not just a notebook-class ultra-light (which even the MBP counts as by my standards).
You'd think that now that Apple is making such inroads in enterprise and needs developers on their platform to support the iOS App Store that they'd see the value in continuing to make such a machine available.