Elly Waterman wrote:
Actually I think the system of interwiki links is not optimal at all. It would be better, to have a central location were all the interwiki's are listed, like commons. [...]
I think your proposal is mostly working from the assumption that there exists a one-to-one mapping between the articles of one Wikipedia and all the articles of all the other Wikipedias. Unfortunately, some Wikipedias are a bit pig-headed and almost deliberately ensure that this assumption can never hold. For example, the German Wikipedia seems to have a rule that forbids it to ever have an article like [[Vulcan (Star Trek)]]. Instead, the interwiki link on the English article links to a German article about all Star Trek races which is very much less detailed. Obviously, there can never be a link back to the English article.
Ideally, maybe all Wikipedians should decide independently of language what articles should or should not exist, and then write those articles in all languages. Unfortunately, this idea is doomed because some Wikipedians have a very strong "localist attitude" -- any idea that would combine decision-making across several Wikipedias would be passed off and rejected as "rule from en". Supposedly, Wikipedians who do not speak language X are not supposed to have any say whatsoever on what happens on the language-X Wikipedia.
Timwi