Nope. I mean that if, in German, [[Zeug]] links to
[[en:Stuff]],
_then_ the en: article [[Stuff]] should automatically link back
to [[de:Zeug]]. Now, if someone linked the [[Stuff]] article to
its Esperanto counterpart, then the eo: article should link back
to [[Stuff]], and "following" the language links from there, link
to [[Zeug]] as well, which then would link back to the eo: article
as well.
I think Ray understood what you were suggesting; I think you
missed what he was saying--namely, that it is an incorrect
assumption that because English article X links to German
article Y, that therefore German article Y should link back
to English article X. Different wikis will divide up the
space of ideas differently, as do different languages and
different cultures. Disambiguation pages will have entirely
different sets of links in each language, yet it still might
make sense for a language link to go to a disambiguation page
if there's some overlap. It's very likely that many one-page
topics in the foreign wikis will be split into several pages
on the English wiki, and some topics will be split further on
foreign wikis than they are on the English one. At any rate,
the simplistic one-to-one link idea will probably create as
many problems as it solves.