Mason can defend. We might not need him to do everything he had been doing, but come on now, he's been enough to have strong games against top 25 talent.
Now, we have more talent around him. I know he cab pass, because I've seen him do it. I know he can rebound, because I've seen him do it, and maybe he doesn't shoot the three like Hardy, but with him, DJ and Hardy, defenses might be forced to focus on the 40% shooter Hardy instead of Mase.