I'm taking a wait and see approach to the iWork environment with regard to Numbers.
I'm guessing that this new free-iWork-in-the-iCloud strategy wasn't conceived early enough to do it as well as they'd like to - but, they felt they had to get some cloud offering sooner, rather than later, to counter Microsoft and, perhaps, especially, Google/Android - just to know users they intend to go in that direction - they wouldn't know otherwise.
They're obviously hoping to draw in more users to the Apple ecosystem with this strategy, so the more they can give the users of Numbers/iWork, you'd think, the more they'd accomplish that.
Will they continue to beef up iWork for iCloud in the future? You've still got your Numbers 2.3 - it hasn't been taken away. And you've got cloud capabilities, maybe not as much as you'd like, for free.
We've got our list of missing features (in this discussion topic, somewhere), so let's see when and what they've got in store for the next iWork for iCloud. The next release of new features will speak, loud and clear, about how serious Apple is about iWork for iCloud, and Numbers.