It would be really convenient to be able to initialize multiple variables inside of the same action. Especially since the action must occur at the top level. This would help clean things up, plus make it easier to locate where the variables are actually initialized.
So for example, I can say "Initialize Variable"
Then inside the action I add a String named "TestString"
Then maybe I have a little link for "add another variable"
So I add an Integer named "Counter"
Then I add an Array named "TestArray" and so on.