I actually did have a couple of iM@S related dreams. I've been having them for a while now and I figured I'd post it before I forget.
Okay, so we're all taking part in a revival of the old game show Where in the World is Carmen Sandiego? with the 765pro idols (dubbed Idolpella) as the primary group of singers on the show and myself as the Chief (as a Lucario). Not only do they sing, but they also model prizes and are sometimes involved in the clue skits.
Of course, 765pro does switch off/team up with other musical groups like 876pro, Jupiter, μ's, Afternoon Tea Time, Ultra Rare, the CPUs and CPU Candidates, the Wake Up Girls cast, and ST☆RISH.
Sometimes before the show, there will be some comedic moments (most of the time rated PG and up) between the Chief and the idols reminiscent of a harem anime. Miki is the obvious alpha of the harem, treating him much like she does Broducer, but everyone else seems to be interested in him too, especially the twins who have such a big crush on him they are not discrete about it at all, whether it would be giving him a surprise glomp as soon as he enters the office, acting clingy towards him, begging to set aside play/"smoochy" time for them, and even posting suggestive selfies on his Facebook page, much to the chagrin of Ritsuko. Things really don't get too weird, though...I've never really cared for R18+ doujins/fanart anyway. (it really makes me cringe/get nightmares whenever I see some of my favorite girls get soiled like that)
"Nii-chan! Mami wants to make kissy-kissy with Nii-chan too!" - Mami
"Nii-chan, Nii-chan! Look here! Has Ami gotten any bigger? Just wait, Ami's gonna get boobies like Mikimiki one day!" - Ami
Around the time I got into iDOLM@STER, I had dreams about Miki once I watched videos of communication events during her Awakened path. However, instead of her producer, I was a classmate of hers who is often paired with her for class assignments. The events are pretty much the same (with saving Miki from the truck and everything). However, she keeps her hair blonde and keeps the events a secret from her producer because she didn't want him to worry about her. Because Miki was closer to me than ever before, I did my best to support her idol career, always preparing a bag of her favorite onigiri before a concert, waiting to walk her home after her work for the week is over, set up some private time together for lessons/photoshoots on days off, made sure I was the first in line (or close to it) to buy her albums, framed an autographed picture of her, etc. While we seemed almost inseparable, I'm not sure what happened after that as I stopped having those dreams.