I've also dabbled with Pages lately, and I don't think I've found any features for now that I desperately miss from Word. Now granted, this is just my workflow, which I believe is fairly basic. But the thing is, most people's workflows are basic. I'm gonna guess that about 80% of people wouldn't miss anything by switching from Word to Pages.
It's a typical example of collaboration lock-in that you'll encounter in so many other areas. It's the reason why so many people are forced to use Adobe apps or Visual Studio.
The most important feature of Word is that everyone has it.