If I had to guess what direction OO development is headed in, I'd say things are headed in a more service-oriented architecture direction. It'll be great if you want a customed-out integrated groupware, collaboration, data analysis and document management solution, and you've got a large, skilled IT staff (and/or Oracle or IBM service contract) to set it up. I doubt it's going to be any good for standalone plain vanilla desktop apps.
Could be I'm wrong about this; but it's open to question where this is headed.
I am very grateful for the work that has been put into open-source office software, and know that they face an uphill battle with the peculiarities of Microsoft's formats.
However OpenOffice & LibreOffice (and possibly Google Docs) are functionality equivalent, and use open source standards. This raises the biggest question with OpenSource products: is the poor experience worth no vendor lock in?
Given Greek austerity mesures, compatibility assurance, the educational use of the product, and it will force MS to compete it's best Greece uses OpenSource.
It's nice to actually see it quickly improving now they've forked, given how stagnant Open Office development was when Sun (and then Oracle) was in charge.