I pretty much love all of it, except the idea of hardcore domination. Don't like the fact that someone could go overboard and hurt me. I want some of that TLC.

The best part is the growth process, especially the clothes bursting.

In a good FMG, the subject who will become super-muscular is very important and also her psychology: a nerdy young girl (not too young), a bored housewife and a weak granny are perfect subjects for me. The FMG for this kind of female loser is a sort of revenge, not a violent one but proud and joyful.
For me the perfect FMG should take place in four phases:

- THE NEED OF A BETTER LIFE. The subject is shown in her unsatisfied life and with her impossible dream to get huge muscles.

- THE GROWTH. The unexpected transormation from a tiny to a huge muscular lady/girl. It can take place in many ways: because of serums, pills, enchantments, gamma rays, miraculous trainings and so on..

- THE SHOW. When she first realize the unbeliavable growth, she need to show herself and the world the new muscular body of her dreams: she proudly flexes all that meat posing as a bodybuilder.

- THE STRENGHT TESTS: Before to get definitively used to that new exciting muscular dimension, she needs to test her strenght and see that all tose muscles are not fake ones and show everybody the unexpected revenge of a loser. So many feats of strenght will follow: lifting enormous barbells or vehicles, uprooting trees, bending steel bars and so on. These are the ways to use strenght I like. I don't like when strenght is used for violent purposes. I can only accept it if it's done as a joke in the cartoon way, for example.

That's all, folks! For now.

Found this one while surfing journals (which strangely can be even more interesting and entertaining than surfing galleries to me), so please excuse this late reply. This is an interesting question which I coincidentally answered for myself a while ago.

What I like most about female muscle art isn't any of your options even tho I enjoy [Everyday Life] quite a lot. For me it is the contrast of face and body.

A beautiful or a cute face, maybe an always-cheerful or even a seductive face might usually be associated with a lean body, normal a least. Not too tall and not too short, no big too boobs and neither too small boobs - the typical "everything in proportion". A usual generic image built upon the average of experiences, icons, beauty ideals and whatnot. By cliche nice faces would be restricted to generic bodies.
On the other hand there sure are many muscular women on this planet - but personally I would call least of them (it is a less-than-minor number) beautiful. Due to all that dehydration, dieting, steroid usage and whatever they're doing to look like they do, most of their faces turned quite androgynous - not really female, let alone beautiful, but neither male though close to that in many cases. And most look unbelievabley much older than they are when they are in "contest shape", not my thing - same goes for that fake tan (its purpose aside, it's just ugly). And besides depending on the "steroid level" their voices grow incredibly disgusting. Nobody can tell me about "sexy deep voices" because all I hear are voices that have suffered something equal to 25 years of chain smoking - there's nothing sexy about it when it's simply ruined. Sexy deep exist, but they are far different than that.

And there's my personal dilemma: Faces are most important to me, yet I am most euphorically interested in anatomy, which muscular people obviously showcase much better than others.

And here comes my hero, solving this dilemma: Art can combine the most precious and highest valued "parts" into a fictionally perfect person. Pictures being silent also terminates the voice issue. And there I can make or look for Pictures that really feed my well developved love for deviance and contrasts to the norm: It is something that does not apply to what we're used to see.

Yes, I guess that's my story

Additional notes for comprehension:
#1: I define outer beauty (appearance) mostly through face.
#2: I didn't mention bobs, because I like boobs in all shapes and sizes
#3: I completely excluded fat women which should have a part in the "normal" section. But honestly I finde them utterly disgusting. I don't know where this eternal dislike for fat girls comes from, but it can't be helped.