I mean, I'm not going to say Pages is the best (I'll probably abandon it for Word, if it ever ships), but I've written a lot with it (along with stuff like Evernote and iA Writer) and I've never found myself wanting for more functionality than it provides...
Oh? Then why do you feel like writing isn't something iPads are good at if you have a BT keyboard and enough functionality in the apps?
Here's something I've been pondering, though: why do we all (myself included) think Office will be better than iWork? Given than iOS is Apple's platform, it sort of seems like they would, in theory, have a better grasp on how to build an iOS office suite than Microsoft would. I guess Office could include more functionality, but then that would also increase complexity.
-Full, proper compatibility with Office applications
-Deeper support for features like watermarks, tables, borders, charts, review controls/options, etc.
-Office feature familiarity
-Significantly more fonts (please!)
-Word is better than Pages in every way
-Excel is better than Numbers in every way
-PowerPoint compatibility is important
It comes from some people preferring Office over iWork on the Mac.
Office is and continues to be more compatible in the business environment and more functional than iWork. It's just that simple.