Earlier quoted context omitted.
Look at what happened with FCP, though. They released a new version, missing lots of features, and then future releases restored functionality. When you're doing a ground-up rewrite, it makes sense to get the basics working first.
However they radically changed the way the workflow works in ways that some (many?) users cant adapt to. I don't do much any more since I shuttered my production side business, but I can't use the current FCP. It's still (and will always be) missing some do-or-die features for me. The Apple Pro App that I really use though is Logic, and, please Apple--do not "improve" it.
It is odd, though, in that releasing a gimped product to be improved later seems counter to Apple's whole design ethos. (The "back of a dresser" parable of Steve's comes to mind).