Timwi-
I have offered the compromise of allowing the Klingon Wikipedia, but disallowing any links to it from any other Wikipedia.
That's an interesting solution, I missed that. If we can make this a general policy for small conlangs, I for one would be reasonably happy. Just to clarify, that should include both links from the Main Pages and interlanguage links.
It might be a better idea to follow Brion's suggestion and move the conlang wikis to a separate project altogether. That's because a Klingon wiki would likely not be just about encyclopedic subjects, but also a dictionary, a general history of the language and fictional culture, etc. The "Wikipedia is not a dictionary" rule is not very applicable to conlangs. While I'm not too fond of using Wikimedia resources for people's pet projects, there seems to be a significant conlang community within Wikipedia and we could honor that fact through a separate wikiproject.
In both cases, I think a well-publicized vote would be a good idea regardless just to get community backing.
Regards,
Erik