Not really sure what the point of the new campaign is since it's this weird detour in the main campaign where you're forced to play as 4 characters with incredibly lame start out decks with zero progression. I've done it a couple of times at this point and I can tell you once I unlock all the costumes you get from it, I'm never touching it again. Going off the Dev's steam posts, it seems this was important to them from a narrative prospective, but as I mention in my review of the main game, I barely consider this game as having a story.
The new character you unlock, Yogger, is incredibly broken. If you're going aura charging build then he's going to turn every conflict into a joke by end game. That being said, using a broken character can be a lot of fun.
Honestly, I kinda just hope they won't do any more DLC for this game. I'd rather they just take what they learned here on this project to make a sequel/spiritual sequel with better presentation. Basically I want the 30XX to this game's 20XX>