Fairy works in place of Light/Holy pretty well. I'd still like to see a Sound/Echo-type though, considering how many pokemon look like they would fit into it. I've also seen people suggest Cosmic, but I don't have a clue how that would work. Like TC said, Shadow is pretty split between Dark and Ghost already. I can't think of any good original ideas, so I'll just leave it at that.
Playing) Fire Emblem: Awakening, Guild Wars 2 Waiting) Pokemon XY
Sound and Light are obvious ones. What are some others that would be nice or fitting?
Shadow would kinda be repetitive since it's kinda in between Dark and Ghost. I can't really think of anything else. Pokemon is pretty much the game with most elemental type variation, ever.
Well they had shadow type in Collasseum and XD. I dont know if theyd be able to work that in, but I'd like it.
Shadow wasn't a type. They are shadow pokemon. Moves like shadow blitz, shadow rave, and shadow sky are moves without types. I play XD Gale of Darkness, if you have it, get the shadow teddiursa and look at its shadow blitz, no type.
Darkstar + Dead space 3 = *error* too epic to calculate
Light type still makes no sense to me. Anything light has to offer is already covered by 4 types (Psychic, Fire, Electric, and Grass). And it wouldn't make a good foil to dark - Dark's foil is Fighting. Plus, Dark types aren't THAT kind of dark, since they're "Evil" type in Japan.
The official Megami Tensei Art Loki of the Shin Megami Tensei IV board. Why? Why not? Because. Maybe. Exactly. My hair is bigger than you.