I'm pretty sure I'll buy it just for the dome thing, but that doesn't mean it's a good idea, as Lando says... It's unlikely there'd be a bunch of new figures, as that's just not the norm for battlepacks, and at best you can hope for "kitbash" figures that make for something a notch about what you have in your collection already.
So the matter basically boils down to it being a good idea to put out a plastic dome for people... Time will tell when the set hits retail. If it sells then great, if it sits then not-so-great (but still nice to get the dome, for those of us that want the dome).
I think the Kashyyyk pack is outstandingly cool but it's hardly been a big seller, and it was packed with GOOD army builders and a Vader figure. Not everything that looks cool/good turns out to be a good idea at retail, and that's the bottom line usually.