Importance of the houses

Shouldn't it be mentioned in the article that the importance of the houses is not just a question of inheritance but also one of different circumstances? Because of the weakness of Tytos Lannister the major house of the Westerlands became weak. And even if House Frey wasn't a major house, because of the location of their seat they had a great influence. --Exodianecross (talk) 00:53, February 8, 2015 (UTC)