Here's a little series which may not be together, but could be. No conversion or anything, but I do like the robot army and the scientist chick is cute(they always are).
http://akuochichance.blog40.fc2.com/...-145.html#more
http://akuochichance.blog40.fc2.com/...-153.html#more
Also, a little addendum to the previous ideas, they would have to include all of the Sailor Scouts/Senshi, 1-3 would be enough, and as for U-Chouten, her dance should definitely be something festive ^__^ I think we could get away with putting in Mimete too, if we go with her lab coat look.
Here's a few more idea, let me know if any stick.
Sailor Moon Movie S, Princess Snow Kaguya (
http://www.soul-hunter.com/sailormoo...snowkaguya.php) takes over and freezes earth, her Snow Dancers (
http://www.soul-hunter.com/sailormoo...nowdancers.php) have their way with the 4 Sailor Scouts, freezing them in bondage while they kiss them into submission, some try to resist, other have given up and submit to the treatment, all slowly becoming Snow Dancers. The remaining one tries to free the rest, but the Princess herself intervenes and blows a blizzard that brings her to her knees. Unable to move the senshi can only watch as Kaguya walks towards her. Two of the Snow Dancers pick the shivering senshi and bring her up to Princess Snow Kaguya's face. She gives her a kiss that instantly changes her into a happy and lovely dovey Snow Dancer. The final scene would be the new Snow Dancer laying by her Princess's throne, having her hair stroked as the transformation completes for the willing Scouts, and the ones who had resisted earlier having looks of defeat on their face as their transformation is nearly complete.
For a change of pace, here's a Castlevania: Harmony of Despair idea. Yoko, Charlotte, Maria and Shanoa are on their way to defeat Astarte, confident that they can beat her since they believe Temptation won't work on them since they are all female. As they make their way through the corridors, they come across chest that have Egyptian themed clothing that will boost Charlotte's stats, so she changes into it(complete with a Ankh if possible). They finally arrive at Astarte's chamber, seeing her looked quite pleased for some reason. Upon seeing her, Charlotte falls to her knees, her eyes glazed as the clothing and the Ankh work their magic on her, fueling a desire to submit to the queen. Maria sees this and tries to warn the others, but Charlotte quickly cast Poison Mist on the group which causes them to pass out. One of them manages to leap out of the way just in time, however, she leaps right next to Astarte, who lightly binds her in her shroud, and gives her a kiss that instantly charms her and causes her to pass out. The remaining two awaken on stone alters, nude, holding Ankhs between their breasts. They are unable to move anything but their heads and try to look around, only to see the shining oil covered bodies of their friends in skimpy slave themed attire, their eyes glazed. They try to reason with them to no avail as Astarte caresses both of their heads, numbing, but not erasing their fears. The ritual of anointment begins with their bodies being covered in oil by their former comrades as Astarte constantly cast Temptation on them, slowly working away at them, until at last they give in. The final scene will be four oiled and happy slave girls and their Queen, 2 fanning her, one acting as her foot stool, and one serving her grapes(though if you want to make it more sexual I would totally not be apposed ^__^).
I got one more Sailor Moon idea, but I think I'll save that for tomorrow, very hypno themed and involves a little orgy at the end.