Okay, I got it, since this topic isn't really going anywhere.
What do you think the relationships are (or could be) between any two idols? Let's start with maybe your favorite idol unit. We can also agree/disagree/agree to disagree on whether or not the relationship dynamic would be likely.
Okay, so one random group I used in the IM@S demo was Takane, Chihaya, and Yayoi. As some people said, Takane gets along with/likes kids, so she and Yayoi would get along. Takane seems to be able to eat a lot, so I'm sure Yayoi would appreciate that Takane doesn't waste. lol Takane is also not used to "commoner's food" I suppose? Even fascinated by it. Yayoi could help her in this department greatly, thus facilitating a friendship. lol
Takane and Chihaya would probably get along, seeing as their personalities are on the calmer side. From what I've seen in the anime, Takane is a bit eccentric, and that may catch Chihaya off-guard sometimes. Overall, they make a rather elegant pair/partnership. I also consider these two one of the stronger and powerful singers of all the idols, so maybe that counts for something between the two of them.
I have no idea about Yayoi and Chihaya. I don't see why they couldn't get along, and given their different personalities, they can better appreciate each other's charms, traits, quirks (like in any friendship involving two different personalities). I can see Chihaya helping Yayoi with singing and the two getting close like sisters if ever given the opportunity to storywise. I can imagine Chihaya having fun at Yayoi's house if ever invited. Same with Takane, too.
Okay, your turn. GO.