Landry's not a three. He's pretty much just an undersized four. He's very good offensively, but he's always going to have the problem with height. Because of that, he makes a great sixth man. Bring him in, get some quick low post scoring out of him, make sure you have Dalembert at C and Donte at SF when you do it, and it's a positive. Having those two in the game can go a long way for covering up Landry's shortness, but it's probably a big enough deal that he shouldn't be your starter.