so, let´s see what you want to bring onto the table with your ideas:

 >>/4725/
> set in the Fall of Equestria universe, a universe in which Equestria is taken over by an EXTREMELY patriarchal race of Caribou/Reindeer, who seek to turn Equestria into a patriarchal dystopia in which mares are regard as little more than sexual objects. 
> Virtually every stallion wether he be Caribou/Reindeer or Pony in this universe is a sex crazed sociopath with at least one or more mares/slaves who must follow his every command, without question, no matter how cruel or degrading, least she be punished.
phew lad, we have a pretty strong start. That escalated quickly. Boy, what a twisted setup.

> What if every stallion in this universe wasn’t a complete sociopath, who cares about nothing but obtaining as much pussy as possible, regardless of how many ponies he has to destroy? 
it´s actually possible but keep in mind that you are taking that concept off from those rules. It can quickly deviate to more miserable things than that with so much ease that ufff, it´s certainly complicated to establish to mark his own limits.Asking for common sense in a sick society mostly leads to a decadent permanent chaos but it´s still possible.

> personally find the idea that every stallion would act in such a manner to pure nonsense, which is why my story revolves around one of the few stallions who wishes to treat mares as ponies, and not sexual objects.
it´s obvious that this little difference leads to a better excuse and an interesting point of view. However, your NSFW story might lead more to a social commentary than accomplishing the fetish at certain parts of the story.

> Ever since the Fall he has watched on in horror as every pillar of decency and morality in his society has came tumbling down, too scared to protest, least he become the next victim of this new Equestria.
I swear I have (sort of) read this aspect of morality around a certain story posted on this board....

> Essentially in this world, while lust between mares and stallions has never been more powerful, love is completely outlawed.
if changelings were evil, they would serve as a counter balance towards this norm.

 >>/4727/
> The first arch will setup the basic plot, backstory, introduce some of the main characters, and expand a little on the lore of the world, as well as being the arch where our two main characters first meet. This arch will also revolve around Octavia and many of the mares she works alongside careers as professional classic musicians
alright, it makes sense that you follow this pattern so far