I was already looking forward to the DLC, but it really looks like a lot of extra effort has been put into it to feel unique. The rain looks great, and a brand new ammo type is a solid addition. Really looking forward to the various quests and choices available throughout the DLC campaign. I'm pumped!
I hope JE Sawyer does a write-up for the DLC after it's released, on his Obsidian blog. I really liked reading what Avellone wrote about Dead Money. Obviously, I'll only read it after I beat it.