[quote=WilsonTurner]
Ever heard of a perfect character?They always win in fights, they're really smart and clever, they're good at everything and generally unbeatable. Everything goes their way.Now look at the Equis Pact. I don't know how many races, but there are many. Do you really think ALL of them will just give up, and surrender control to a bunch of magical talking horses, some with sno-cones on their foreheads?There should be legitimate underground movements. Political manuevering to get other races into the decision making process.But nope.It's all Equestrians.The Equestrians have tons of powers from all these races that they control, who they don't try very hard to break the control.They have really damn good weapons.They have really damn good shields.They have really damn good spies.They have really damn good, well, I'd rather not go on.They even have a goddess that helps them out.So, are the Equestrians more like a main character of a story, or a perfect character?
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For races, we essentially have all the Citadel races from Mass Effect, the 10 (I think?) Races from the Equestrians themselves and the Sazkarjhit so I believe in total its ~20.
Credit where its due though, at least they are honest on who really runs the pact; it's named the Equiis pact xD

Edit: Now please note, I am not saying the society cannot possibly ever work. We are playing alien races, so some it could work well, especially with their POV. But I think the Equestrians are running a Mary Suetopia, and I will use a passage from TV tropes to reinforce this

"Note that there is no reason to assume that it isn't possible to create a better society. Thus, some of these utopias might actually work. However, the distinctive characteristic of a Mary Suetopia is that it goes beyond just being a perfect society - it's a perfect society filled with perfect people, who show enthusiastic support for the society's ideology. For example, maybe no one is poor unless they don't adhere to core ideology. Anyone who disagrees with that ideology is misguided at best and evil at worst"

Now, just in case you were going to point out the Collective has some of these features (The people support it's ideology with fanatic enthusiasm etc), that might be because everyone who disagree's gets their memories replaced. The Collective maintains controls through Dystopian means and holds together their Utopia through Brutal Control, Screaming Fanatics, Executions, Mind Control and pretty much any other way they need to (IE: When those Selkath tried to escape the planet. In the end they were all caught and shot). The Equestrians DON'T, and yet theirs works perfectly because everyone is willing to obey for no reason, a blend of 'Mary Suetopia' and 'Perfect Pacifist People' (Though the later is heavily debatable considering the Equestrians actions). The Collective is a blend of 'Utopia justifies the means' and the 'Evils of Free Will', which works because they will go to the lengths required to run this society regardless of the cost in an attempt to set up what they see as the ultimate utopia where everyone will be happy and there will be no want, no worry, no pain, no sorrow blah blah, basically good things. With the Equestrians it works because... uh... Magic? xD