A small ray of hope for you all. "Bones" has publicly stated that they ware working on a anime "revisiting" a past title. Most speculation on the web seems to lean towards it being Full Metal Alchemist or Sailor Moon but I would not rule out Ouran since FMA and SM were both really completed as far as their mangas went. Ouran on the other hand - the anime only covers the first half of the manga series with the last two episodes mostly original to provide a stopping point ( I have never really thought of it as an ending). In the manga the festival episode serves more as a turning point in the story. WHile there is plenty more silliness it's after the fair that things turn more dramtic. the best parts of the manga are yet to come if it's ever continued in anime.
Even if it's not I recommend to any of you who haven't to read the manga through (availble from VIZ)