I'll admit I wasn't a huge fan of Hendo coming into this season, mostly because he couldn't shoot and that's a pretty necessary skill for a shooting guard. But he obviously spent a lot of time in the gym this summer working on his J and it's paid off. He's nearly automatic from mid-range at this point, and since people have to respect his jump shot he's able to use his tremendous athleticism to get to the rim and finish as shown above. Add to that the fact that he's an above-average defender. I'd say that his transformation into a solid NBA player is now complete. If he could ever add the 3-pt. shot to his repertoire he'd have all the tools to become an all-star.
As for whether he's ready for prime time as a starter, he's shown the ability to make big shots and big plays under pressure so I'd say he is, but I'm still not in favor of pushing either GW or Jack out the door just for cap space.