Well, as I've ranted about previously, I think all of those unloaded keywords were a waste of space when they were confined to a single culture (like valiant, ranger, knight, southron, corsair, besieger, tracker etc.) because then they don't add any strategies to the game, they just make for narrow deckbuilding. Whereas, once you throw them around you could have a lot of scope to make a multicultural trakcer deck, for example, or in this case, a valiant deck. There's no reason Elves and Dwarves and Gandalf can't be valiant, for example. I'd throw it everywhere, then it has a meaning - it becomes like creature types in MTG (where you can build colour-orientated decks, or you can take a sideways look at the cards and build tribal decks like an elemental or giant deck).
Thranduil