I feel like I can agree with most of this, even though many of my stories focus on this.  While I find the idea of permanence to be pretty sexy, the actual real-life ramifications are terrifying. Which is probably why when I write a short story, the character isn't exactly enthused...  As for finding any stories on the Belial site, I doubt you could find many, and I don't really recall any at all. 

If you want to look elsewhere, I can give a couple suggestions, and links if you want.  I know http://cheesium.deviantart.com/ does a lot of temporary transformation stories, although most of them involve detachment, but he has a good amount of really weird stuff too.  On writing.com, there are several cyoa's based upon exchanging or morphing body-parts with little consequence.  Again, not a whole lot of extreme transformation where the person returns to normal, at least in my experience.

I really like the permanent aspects to the Legends of Belial setting, but I often find really extreme transformations unpleasant or, as you say, a little tragic. I wasn't seeing a whole lot of the kind of stories I was really into, so I started to write the stories I wanted to see more of on the forum. Maybe you could try writing one yourself? If it is really good, others might be inspired to write more in that vein.

Actually my main idea for Non-Permanent Transformations is basically that Transformations can be used for recreational uses which they can always go back to their original human selves which afterwords they can transform into other things as well.

I wonder if you could dig them up and post them here or maybe elsewhere somehow?  Since I like to see them...

Well I guess we have the same thoughts here especially I can't just see how a society would function for too long where transformations are not only permanent but also widespread and 'inevitable' due to it's highly contagion where as if it seems everyone in the society will eventually be transformed and especially I agree that body horror and 'sexy' are pretty much antithetical which as if the world doesn't allow or even value (especially feminine) beauty to exist for very long where it's replaced by body horrific grotesque caricatures or abominations where it's rather depressingly worshiped instead. I think there is alot of problematic elements in the Belial universe we can agree on which gladfully I'm not the only one here.

Well maybe you could continue writing the genre but maybe not in the actual Beliali universe but in your own universe or maybe alternatively though maybe you could write something rather 'non-canon' that maybe Avatars/Demons can reverse people's transformations back to their original selves or maybe you could create your own Greater Demon who actually reverses transformations and maybe even gives the knowledge to humans to make Transformations reversible or something which this particular Greater Demon's philosophy that transformations should be for recreational use and they don't have to end up the rest of their lives as that and they can always change back so they can always start from scratch to transform into other things...

Of course though I previously heard Demon Man's 'reasons' for not reversing transformations is because we don't have 'DNA memory' or something, I guess maybe you can try to say otherwise perhaps.

I'd say maybe you should continue writing the genre and capture the same sensual feeling of transformations into body horror abominations or things and add the reversibility  to it. I think there's nothing stopping you to write such things.

Perhaps for example I think you could try to write a story in the same style as "Greatest Show" "Morben the Magnificent" where attractive women step on stage, disrobe and they transform themselves into the most body horror things imaginable which they're later displayed in a 'freak show' museum which they're only changed back during the end of the event, or sometimes maybe the creatures are in display which people see them to get a taste of things yet to come which the creatures are changed back to their original selves once the show starts which they're going to replaced by the ones who are going to be transformed in tonights show.

Well in short, maybe we could change the premise where transformations are instead recreational due to it's sensations but at the same time we shouldn't deprive anyone wishing to go back to their original forms especially I think the feminine body form (well women in general) should also be respected and not 'thrown away and replaced' with something more uglier permanently that is, it should be only temporary for shock value (and arousal at the same time).

I think the entire premise would have been more appealing if the transformee can return back to their original selves which they'll transform into more strange creatures or things...

Of course though I think the transformee can remained transformed the long they want (like even more centuries) and if they're transformed back to their original selves, they'll remain the same way (age, appearance, etc) before they got transformed especially inanimate objects sort of like "time capsules" sort of.