Which leads me to the bone of my contention with Kennon: The Targaryen dynasty can’t be held to the same standards as that of the other noble House s of Westeros. Sure – its a moral double standard to sign off on Targ incest while condemning that of Jaime and Cersei (or others). But there is no moral equivalency here. The Targaryens are/were a foreign dynasty with different customs and different attitudes which they forced upon the Westerosi with dragons and steel. It remains clearly unacceptable for Westerosi to practice incestuous behavior – simply look at the lengths Jaime and Cersei go to conceal their activity. Cersei even ruse the double standard at one point, wishing Targaryen practices were acceptable for all. But they aren’t. The taint on Myrcella and Tommen is what gives Stannis’s rebellion legitimacy. It also got Jon Arryn killed – and on and on.
As long as the Lannisters are close to the Throne, the realm cannot have peace – and peace is vary’s ultimate and only goal. He clearly believes a Targaryen Restoration is the most effective solution to this whole mess – that a clear restoration of that dynasty will bring peace to the Realm and security for the small folk. And I think martin ahs done a very good job of developing the character and slowly but conclusively revealing his motivation towards this goal.