It's his ability to find space and pick the correct option which is the most exciting thing for me. I've seen loads of youngsters over the years who can dribble past players, be selfish but then have little end product but the timing and weight of his passing was absolutely faultless yesterday.
As many have said before, the only thing I'd like to see a bit more of is a willingness to shoot or really drive at defenders when he gets to the edge of the box, with his footwork he's likely to get into a scoring chance or gain a penalty. I think he will be even better when he gets his first goal though. Hleb comparison is quite a good one actually, he was a very underrated player for Arsenal and almost impossible to get the ball off!