I have been excited about this set since it was announced. I did not get 2nd openers of either figure when they were released in the Black Series and I had always wanted to be able to pair them up with Yoda riding on Luke's back.
While I agree with what everyone has said regarding Luke's arms, if you do set him up with the pack on his pack and Yoda in the pack, and then have Luke's arms posed so that they are folded back and his hands looking like they are clasping the shoulder straps of the backpack, as a figure display, it does look quite good, so I'm sure that's what Hasbro was going for with this figure.
The one way this three pack could have been better is if they had packaged it up like the Skiff Guards and individually carded each figure on a TVC cardback.