Okay, I had this amazing idea to crossover Halo and MLP: FIM in a way similar to Fo:E crossed two stories together.
In this world, ponies fight against the covenant of puppies, kitties, coons, and other alien species to save all of not just ponykind, but the entire galaxy whilst discovering hints of the ancient beings of long past.
The kitties, or Zyphers, are like the elites, powerful warriors of honor, each equal to a Spartan in power and ability (Actually created them for another world, but I noticed they fit perfect into this role with minimal changes).
Puppies are like the grunts, numorous, aggressive, and pack minded.
Coons are like the jackels, thieves and swindlers, they also are great at sniping and such.
Still working on the rest. I have lots of ideas on making this unique in it's own way yet still recognizable as halo and mlp.
I don't have a system decided as yet, mostly interested in any help in building this concept further, whether to be played or merely written.