Defense you can work on over time. Fred's teams weren't predicated on defense, they were built to out gun you. Tyrus McGee wasn't getting minutes because he was a tenacious defender, actually he was quite the opposite.
Not saying Terrence is the shooter Tyrus was/still is, but it doesn't seem outlandish to think he is in the top 3-4 guys on the team in that regard. Terrence could easily be our energy and instant-offense type guy off the bench that Tyrus was. Like I said, bash away for him for his defense whether it's rightly deserved or not, but if the guy can consistently bring an element to this team that it's been lacking, he needs to be getting at least rotational minutes.