I agree - I think Cersei would make the best Queen and she possesses everything Tywin Lannister wanted - Physical beauty, aggressiveness, wisdom, healthy courage - Except she's a woman. Tyrion would do anything for a bit of affection and wanted to prove himself - But he's a dwarf. Jaime, Tywin's beloved son, doesn't seem fond of being king. I think both characters work as a good social critique.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you
