I think this is the year that LibreOffice actually takes off as a widespread replacement. No offense to any devs that might be reading, but the last few times I used it (or Open Office), it was awful in a vague, this is just sucky, slow, ugly way. 3.4.6, however, is great; I know my office could move over with barely a hiccup (we are technical bureaucrats -- lots of SAS and Excel and GIS).

I think it is only if you have some complex workflow dependent on VBA and links and all that crap that you would have a problem, and I think most people tried that garbage in the late nineties and never did it again. Mail merge is the only stupid automated thing that sort of works, and Libre has that.