Im with Drilnoth here this is clearly at least as notable as any of the other DD modules each of which has their own page  This one has the additional notability of  being about an iconic DD character and furthering its plot  being one of the few modules that takes place across multiple campaign worlds and  being the last officially released module for nd Edition which I realise isnt mentioned in the article  this is my understanding but I cant find citation for it right now  Notability warning should be removed