If they were going to so completely reuse the Dagobah sculpt, this needed three things: a belt that distinguished the figure, a hairpiece that matches the artwork better, and perhaps a black Jedi cape as well. The ysalamir really has nothing to do with Luke, it's like if a ROTJ Luke came with the emperor's force lightning.
Hahahahaha! When I first saw the Luke in packaging this morning, I thought that orange thing was Mara Jade's hair.Dark Dago-baahhh Luke and a french frie critter...
Maybe for customizers to make a Sith version of Luke.
Verdict: Pass (I'm not a customizer).
Edit: It kind of looks like hair-metal boots he's wearing. Slap on a long-hair piece and add some make up, boom! Mötley Crüe or something