What in your mind should “deluxe edition” come with in order to justify the added price?

Some of you will probably laugh, but I’m a big time music guy and I recently bought the fire Emblem warriors deluxe edition almost exclusively for the soundtrack. Team Ninja usually delivers on remakes and rereleases of soundtracks from past game. I also preordered the Xenoblade deluxe edition that comes with an art book, soundtrack and metal game case. There is one more thing I forget at the moment, but you get my point. Another deluxe edition I really enjoyed was the BLOPs 2 one from GameStop.

Does deluxe edition have more to do with in game content for you rather than cool little artsy add ons here and there that come with the game? I find the latter to be more appealing personally.