What I mean by this is, what features are you glad to see developers put in their games, even though they're not needed to make a game good.
For fighters, I love it when they include an artwork gallery (Soulcalibur III has an amazing one), or different costumes instead of pallet swaps (Dead or Alive is undisputed champ here).
In JRPGs, I love it when they actually have your weapons change appearance in battle when you equip something new (such as the Keyblades in Kingdom Hearts), or when they include a log storing information about all the characters and/or monsters you run into (preferrably with the character/monster sprite or 3D model as well).
All these features are not needed whatsoever for making a game good, but it brings a smile to my face when I see these things.



