As someone who is forced to live through the hell using of Powerpoint at work, I am begrudgingly "looking forward" to this release.
What I'd really be looking forward to would be a Windows-based viewer for Keynote presentations so I could sell my employer on using better presentation tools, but it really looks like that will never ever happen.
Honest question: what bothers about PowerPoint?
I like the breadth of features. I don't like the cluttered mess that they make. I feel that there should be two modes when using the thing: Streamlined and Advance. Streamlined would have the nice functional feel of Keynote with the most commonly used features. Advanced would have everything else. And, of course, it should be all packed into a customizable sidebar within minimal top bar.