Terminator,
Basically, because "Enqueue" is a new action (or an old one re-named) I thought maybe it was "left out" of being able to be chosen as default. The whole idea of the possibility of being able to set your default preference just came to me while reading this thread. Because in Tony's statement he didn't mention the other actions, I thought the option to chose your default was something I may be missing or overlooking. Even in your response you wrote:

"There is no way to make anything the default action - its a pop up menu"

Had Tony's original post said that (or something similar), I wouldn't have even had the notion that setting the other actions as defaults may be possible. Just a simple misunderstanding, no reason to try and make me look like a fool for asking.