The column by David Pogue in the NYT says it all: the long-expected launch of Microsoft Office for iOS is a non-event.
As I am slowly progressing with the design of my own PowerPoint alternative, I start to realize that phones and tablets require a fundamental rethink of what a user actually wants to do in a presentation design/delivery context. I have not cracked it yet myself either but am trying hard to solve the problem by trying to disconnect my thinking completely from how desktop presentation design applications have been set up over the past 30 years.