I'm fairly new to Elliquiy, and have no real experience in gender-swap rp. If I could ask, is your main interest in playing the one who undergoes the change, or in manipulating it? What role are you looking for in your roleplay partner? Among your plot ideas was the one of the island, where hard core criminals are swapped and turned into sex slaves for world peace. (Now there's a tee shirt slogan!) With a ruthless and manipulative warden in control, I would think. Does this interest you?