Where can that plan be found online? Or what else was included in it?
Will try and find a link for you - fairly sure it was online at one stage, at least. As far as I can remember, other plans included an African savannah on the Cotton Terraces (with separate areas for the okapi and pygmy hippos) and Australia on the North Bank (Tasmanian devils, koalas, wombats and rock (?) wallabies). The Mappins were also to be refurbished - can't remember but I think it would have been for giant pandas and/or Amur leopards.
The only aspects of the plan that have got off the drawing board are the new lion enclosure and colobus aviary.