David Cuenca, 02/06/2013 02:22:
[...] specially now that projects like Wikidata have
shown that it
is possible to have both localization and centralization living in harmony.
We're VERY far from such a harmony, or maybe I'm misunderstandind what
you mean here. We don't have a true solution for the problem of a
multilingual wiki, Commons' pains show it well.
<https://wikimania2013.wikimedia.org/wiki/Submissions/Multilingual_Wikimedia_Commons_-_What_can_we_do_about_it>
From what I recall, localisation was definitely not the reason for
splitting. It's also wrong to assume that bringing people on the same
wiki will give you a single community: you may well just lose the
(senses of) communities and end up with a dispersed array of editors.
Nemo