The meaning behind the name 'Rook'

Based on the image in the previous post, I am going with the chess analogy. Also, I wonder if there was any foreshadowing in his chess game with Iron Bull. He sacrificed his last Tower (Rook), moved his pawn, sacrificed his Queen (Mythal), moved his pawn and Checkmate.

Even the cover of the book has the Wolf surrounded by what is probably meant to be the Fade whilst looking down on the Rook. So, Rook is his chess piece.

Now think back to his conversation with the Inquisitor. We ask won't dropping the Veil free the false gods. He responds: "I had plans." We assume those plans have been interrupted by the loss of his orb but he recovered from that one, absorbed Mythal and used the idol instead. However, everything we know of his plan is what he chose to tell us. Somebody suggested before that perhaps telling us he was going to destroy the world was so that we would seek to stop him. However, the current ritual was never intended to remove the Veil altogether but release the (last) two old gods that we would then have to deal with. Rook was unknowingly playing into this. Meanwhile one of our team is his pawn or alternatively the Drinker of the Well of Sorrows. The ultimate goal of Solas is to neutralise the false gods and then drop the Veil (his pawn using the magic knife the do this), thus cleansing the world of the Blight that has fully been exposed by the false gods. Solas then walks free, mission accomplished.

Remember it always seemed bonkers that he would tell the Inquisitor that he was going to destroy the world because, as Charter says, naturally we would try to prevent this.  He keeps apologising and saying he did it in a moment of weakness so we could enjoy a few years of peace.   This was ridiculous.  Who was going to sit back and chill when they know the world is about to end?   Certainly not if they believe they could stop it.   Also, I don't think Solas ever had a moment of weakness.   When he told the Inquisitor it was with deliberate intent to further his own plans.