To me, the greatest asset of card games is the hidden element of your 'hand' from your opponent. The chance to bluff and counterbluff. Would Poker work as a cooperative game? The Tolkien theme is excellant for games - I still have hundreds of cards from the first 2 efforts to use it - but have reservations about the cooperating aspect against the game itself. The original 2 used an opponent to oppose you on your turn, then you opposed their effort to succeed. A good concept that works well with card play. The excellant, but now defunct 'Stargate' ccg used the team of heroes with differing skills to overcome a number of sort of Quests. Here again, your opponent used cards to hinder you and vica versa on alternate turns.
Much as I love the theme and FFGs record so far in lcgs, I really think I will have to study this game more closely - and hopefully play - before being convinced that hidden hands work in cooperative games. Why are they hidden? If it is 'all win or all lose', why not all cards on view? Although that sounds more like 'solo' by commitee. A video of play as they did for 'Warhammer Invasion' - brilliant! - would be very useful. Cheers!