I'm curious about the piece too, but my concern is more with the size of the thing. I'm a horrible judge of scale/distance/measurement, and the thing looks to me like it's pretty big from the photos. Then again, I could be looking at it completely wrong and it's more along the lines of the vintage Dagobah playset.
If you figure in that the figures would be about five bucks on their own, that gives us roughly a 20 dollar pricepoint for the playset. The last playset that was 20 bucks was the Theed Generator Complex for Episode I, and while I really loved that playset in general (I hated the Hangar), it was pretty skimpy on its own.
So yeah, what I'm wondering is how does it compare in terms of scale to the Naboo stuff from Episode I, the Arena from AOTC, and the Dagobah playset from the vintage days, plus if it seems to be a little sturdier than the awful POTF2 Hoth and Endor playsets.
The one redeeming factor for the Mustafar set so far is that they didn't pointlessly attach one of those Big Ass Cannons to it at a random point.