Seems to be a lot of questions about LLP, so I thought I would throw this out there.
First Game: December 20th versus Oakland at the Palace.
I attended the open practice/scrimmage after the northwestern game this fall (I think I get a double black belt or something...anywho) and this kid is legit. The practice and scrimmage were intense. Obviously, things can change 'when the lights come on' but nothing suggests he won't be able to perform at the same level or better in games.
Notes on the scrimmage - He absolutely drained a three from the top of the key. nice stroke and very confident. He also jumped into a passing lane, stealing the ball, taking about three dribbles and jamming it home on the other end before anyone really had time to react. My friend turned to me eyebrows raised and said 'shot out of a cannon'. Notably - he 'ran with the ones' as they say the whole time as well, which was a little surprising to me, but obviously speaks to what Beilein thinks he will contribute.
On to the impact for the team:
To address some points from previous threads, first is chemistry. He has been with the team for about a year. He gets along with everyone and has been practicing and lifting and working with them that whole time. If anything, I think the team will be really happy that he finally gets to play because they all realize he is going to make them a better team.
Second - Offensive Impact - he is a 'combo guard' meaning he will play both the 1 and 2. He is a very good shooter and a scorer. He can drive and is a good passer. He will be the best guard on the team. (this excludes Manny as he is playing wing this year). Will he score 20 a game? no. Can he in a single game? yes. He will take a significant amount of pressure off Manny and Sims and will be that third consistent scorer contributing probably 8 to 12 points a night.
Third - Defensive Impact - this has been the most talked about aspect of his game is his voracity on the defensive side of the ball. He will immediately give the team the ability to play significantly more effective man-to-man defense if he is in at the two guard and Grady is at the one. If he is at the point, he also gives the baseline man in the 1-3-1 significantly better height/more of a presence running out to challenge the corner three pointer.
Fourth - Minutes - He will take minutes from Merrit, Lee, Novak and probably a lot of Douglass' minutes. I don't think any one person will be affected to the point where they become disgruntled, except for maybe Douglas if he takes that starting spot.
To sum up - LLP will have a tremendous impact in upgrading the team's performance in games and being able to consistently score within games and also on a game to game basis. He has ALREADY had an impact by making practices more challenging and has positively affected the other guards games' by pressuring them in practice and providing competition for their minutes.
Update: Link to highlights from open gym while LLP was at AZ below. This is roughly 1.5 years old and he is presumably improved from that time, especially under Beilein's tutelage.
(link ganked from comments on another thread. Thanks to baorao for finding it. as he noted, music on the highlihgt movie might not be safe for work.)