"Clones" I would like to see (but I think the term clone ia very subjective. I would not call a przewalaki horse, a Somali wild donkey, a wallaby or a blackbuck a clone):
All kinds of the missing bears: Spectacled Bear, Sloth Bear and American Black Bear
Leopard (Is it a clone? But compared to some other suggestions within the thread it is also kind of a clone from the Jaguar, a bit smaller, other face, other coloration) --> I prefer Amur or African subspecies
Dromedary
Black Rhinoceros
Grevys Zebra
Massai Giraffe
Vicuna
Eastern Grey Kangaroo
Wisent
Barbary macaque
Barbary Sheep (Perhaps not a typical clone like the others)
Nile crocodile
Iberian Lynx or Bobcat
And more...
What I personally hope we do not get (I will nevertheless have nothing against free integration)
Eurasian Brown Bear ( We already have two subspecies in the game)
Eurasian Wolf (The same as the brown bear)
Another tiger (The same)
Split thought about:
Asiatic Lion (Already belongs to the subspecies we have in game but in real life zoos they are normally called asiatic lion)