It's almost never a matter of something being hard to do, actually (though some things are). Rather, it's a matter of trying to simplify things to the point where they cover most things, without adding excessive complication.
We knew, of course, that there were other combinations of things that could be wanted as "on completion" actions. But, when you start combining them, where do you stop? Do you turn it into a big set of checkboxes? What about things that aren't legal together? Two pop-ups, with a volume action and a "termination"?
You get the general idea. Suddenly, a simple list of items becomes more complicated, both in UI and in semantics.
Sure, the "kid" did it. But, maybe he shouldn't have.
