These two points here! I'm much more interested in this theme now. Before it was good organization vs. bad organization - it can only play out so long before it becomes boring or repetitive - and quite limiting. But when you have a collection of independent bad guys - every one of them is a threat. They can all hold their own. This makes the stakes higher, and our heroes that much more heroic for battling them. I'm sold on the theme because of this.
With this in mind, I'll buy all of the sets. Last time around, I didn't - I felt I could skip some without missing the overall story / narrative. But this time around, I'll need to get them all to have the complete story.