I don't think it's as bad as The Underdome, but The Holodome isn't exactly worth your time either. The Holodome is another arena fighter styled DLC which isn't exactly my favorite thing in the world. For some reason the arena used in this is massive, which makes it a little tedious running back and forth trying to find all the enemies so you can finally beat the waves. The rewards in this are way better then the rewards in The Underdome, but they still aren't anything special. I really struggle to get into these types of DLC, they just kinda suck.