There's a Separatist mining operation on the planet according to something I read.
The devastating battle Gascon mentions was in a comic book, there's a decent nod.
I still like this arc more than the Onderbland one. It has been drawn out too much, but that applies to all three arcs this season, which account for over half the season (12 episodes). It's interesting how little Kenobi and especially Anakin have been used. I'm not complaining. However, it's a bit silly for the only "starring" character in a four episode arc to be R2-D2. Jettisoning the pit droid for 3PO might've been preferrable, but his appearances seemed limited...budget or Daniels' availability? I don't know.