It depends on whether we consider Discord to be the be-all-end all. And, in fact, how far he himself is willing to go with his powers. I mean, it's possible what we see is just
A Form You Are Comfortable With. Not much fun fucking around with ponies if their brains melt upon seeing you.
There's also the fact that, despite him being far and away the most powerful entity we see in the show, there's a power that can neutralize him with
ease, which means there's something that's at least his equal out there to power the Elements in the first place. With that, there's really no evidence that there isn't anything a lot worse out there. Or that there's nothing in the in-between that isn't as powerful(As someone who plays pong with the fabric of reality), but a lot
weirder.
Like, imagine Discord is say, a Hydra. Pretty menacing, kinda weird. There's still dragons and Timberwolves kicking around, out there.
edited 1st Aug '13 8:28:42 AM by kegisak