If they want a more "strong" flavor then they should keep talking to Sayumi and LinLin, and then maybe Eri, JunJun, Risa, Reina. Sayu has a really good comedic sense, and LinLin just says things that are perfect without really knowing.
Eri is totally spaced-out but still talkative, which is a great combination, and JunJun still comes out with random Chinese from time to time.
I still think LinLin's line when they explained the Johnson name was just GOLD, from the ONSA appearance with OG.