Personally, I don't have any problem with changing the name of the Universal specs or restrictions. Maelora game has its own set of restriction, far more tights than one universal spec.
Now, for a spec called Retired Clone Trooper, I would not only request a human male. You have to be a clone in your backstory! Probably you're old depending on when you're playing. Probably you committed war crimes or killed your general during the last day of the war.
Let's take another example. A droid PC choose a Jedi spec, or even a career: Would I restrict that choice? no. Would be this droid a Jedi? of course not. And no, Skippy is not an argument in favor.
I agree with Donovan on the point of balance. I don't have a problem with 2 additional career skills counterbalanced with some story elements.