A wolf and a penguin could never live together, nor could a camel and a hippopotamus. That would be absurd.
And the older you get, the fewer things you really love. And by the time you get to my age, maybe it's only one or two things. With me, I think it's one.
I interprete the purchase of elite forces with the "increase army" action in a way, that it is allowed to place one arab elite AND one byzantine elite with the same action, if you want and can afford it, right?
I agree with you but I can understand the ambiguity. Thematically it makes sense to me this way too.
I read "only one cube can be place in an elite box in a single action" as: only one cube can be place in each elite box in a single action.
Not: one cube can be place in only one elite box in a single action.