GNOME Office was not viable 2 years ago as anything other than a meta project. A lot of hard work by the AbiWord, Gnumeric, and GNOME-DB teams has changed that. Now a GNOME Office suite is a viable target, and the excellent work by the 3 member projects (member, not associated) at moving towards a shared architecture looks set to deliver that.
Jody is abstracting the plugin framework, among other things, out of Gnumeric into libgoffice which will provide an excellent starting point for decent integration between the suites.
And whilst there may be differences - such as the cross-platform implementation - between the projects, this is nothing that would be solved by a merger. No, what is needed is cooperation and collaboration. And Jody, Dom, Rodrigo, and the other involved talented developers have been working towards that for several months now.
Hell, we have developers from Inkscape, Conglomerate, Planner, and even GnuCash in on the discussions. There is even a rudimentry presentation app bundled with Inkscape called Inkview that may well develop further.
Now the opportunity is available to make GNOME Office a competetive suite. We now have viable, world class applications that can and are aligning their direction and goals.