I would like to see a smart, young (I was surprised to see that Ng is 48 -- time flies) GM that might drag this franchise into the 21st century. (I proposed Ng as an example of the kind of person the Orioles should hire one or two GM vacancies ago.) But I doubt we'll get anyone who hasn't either been a GM before or been around the organization for a while.
I don't have any reason to think that Brady or Buck has the qualities I would look for in a GM. Buck, in fact, seems to lack those qualities from what I can see in his decisions as a manager. Brady's off-field qualities (other than in conditioning players) remain something of a mystery to me.