For the first couple of runs I wouldn't recommend having the Crimson Court active, because it adds a bunch of complex mechanics on an already complex system that will take a couple of hours to understand and get the hang of. The CC DLC adds a mechanic where your characters can become vampires and you have to deal with Buffs, Debuffs, an extra crucial item that takes up inventory, an enemy that hunts down your party in dungeons, new enemies and a new dungeon. I think it's fun, but that's because I've played the base game for hundreds of hours so the dlc was a fun edition for me. For a new person play about 3 hours, beat a boss and if you see yourself sinking more time into it, grab it.
As for the Hero DLC it's very medicore in my opinion. The new Hero is very situational and is only really worth it for Abomination parties so you can have another heavy hitter in the party. There's also some unique random battles that can occur in dungeons with them that can result in some rare and unique trinkets and buffs, but I didn't feel they were worth it. If you see it for the cheap, grab it, but otherwise it's very skippable.
