As primarily a solo player, I can see where richsabre is coming from. For someone that plays primarily co-op, there's nothing stopping them from playing a solo game every now and then to utilize cards like Denethor. For someone in richsabre's situation, there isn't an option to play cooperatively every once in a while (barring online play). Sure, he could play two decks, but I agree that two decks is too unwieldy and being able to peer into both hands gives you an effective starting hand of 14 that feels way too unbalanced. Playing two hands makes me feel like I'm cheating. So my point is that the co-op player has a few cards that he can still use, even if they are primarily solo. The only option for a solo player to use co-op cards is to find another player (not always possible) or play two decks.
I guess the final option is to make your own rules for co-op cards in solo play, but that makes it harder to share experiences and relate to other players and is generally frowned upon.
)
(Although scaling really could be improved - yes I'm looking at you, RtM...)

