About the Queen, it´s something everybody asks to me...xD
Pay 2 gold to put something out of shadows is expensive, and if I do it, I need it to be, or deffinitive or it must help me in a "deffinitive way"
Tyrion is one of those "deffinitives" and the black cells helps me to control the board.
Gold Cloack gives me "nothing", comparing to its cost. Ok, it´s good to draw a card, and a 4STR double icon, but I have all of this with other cards.
King´s Landing gives me the same that other cards I already have, so It didn´t pass the cut.
And the same is about the Queen. Ok, I can win lots of power, but in my environment, Valar Morghulis is vastly seen, and I don´t have any Lightbringer to protect her, and 2 copies o 3 are too many cards. (In fact, Kill for your king, City of Soldiers, Milk of the Poppy... too many cards in my playgroup to be worry to protect her.)
But hey!, It´s my thought, and my way of play, just try it by yourself, and see if you can use it.
I´m glad that you like it!!