Sending the CH47's to Leeming would not be a sound idea because the main user is not anyone based up in Catterick.
16 Air Assault is based in Colchester and therfore one could argue that Honnington or Wattisham would be a better base for them?
Odiham is prime time real estate and no-wonder the MoD wants to sell it off to developers. Even better why not commision the builders yourself and then make even more cash for the mod by selling off the individual houses?