I'm surprised to see so many people going with the "as long as it's not fetishized" answer. I like power-dynamic stories of a lot of different kinds, and serious treatments can be fantastic, but sometimes the angsty, sexy mileage you get out of the inequality is part of the fun.

Now that I think about it, my f/f OTPs tend not to have a lot in the way of power-dynamic fodder of any kind. Even with Dorothy/Ozma, Ozma never has direct power over Dorothy as a citizen of Kansas, and when she moves to Oz she gets promoted to honorary princess anyway...

I did enjoy this Rei/Minako princess-and-her-bodyguard AU, and would love to see more fics in that vein -- canon or AU. Stoic "I am not worthy of her" plus noble "I can't abuse my position by making a move", mmmm.