Answer: There are over 600 episodes of Case Closed, including episodes being made in 2011. In order for these to be uploaded to the site both you, and the uploader are going to need some immense patience.
Thank you for your concern, and I'm sure (not really) someone will be hopping on the Case Closed uploading bus real soon.
However, if it's a case of removal due to a request from a one Funimation, there's not much we can do about that right now, or possibly ever.