I'll start with the art. Cute! While generation 6 has the 3D design, this comic renders it back down to traditional 2D design, very in line with the previous MLP comics. Not hugely innovative or stylish, but if your hope was for more of the same, you've got it! There's plenty of background details and ponies, showing how the world has integrated since the movie. A lot of big emotions on faces, not just of main characters, but from the background ponies, as well. Nothing anatomically over-reactive (except maybe for Izzy, but that's Izzy), but just emotive.
Now, the story...that's just odd. Discord believes that the three pony types being together again will result in disaster, and so he takes a Unity Crystal. The Mane Five go on a series of adventures to recover the crystal, prove Discord wrong, and keep ponykind that anything is amiss. We're given no reason for WHY he has become anti-friendship (at least in this first volume), just that he thinks this reintegration is a bad idea. I could definitely see this leading to a more interesting character revelation (something about how he felt losing Fluttershy?), but there's no foreshadowing, yet. Let's hope volume 2 makes a bit more effort on explanation.
There's also this odd thing for issue 5, where the story of how Discord left his imprisonment is completely changed. Now, I might have believed that the true story was lost to history, but Fluttershy and Discord's redemptive friendship is actually mentioned in earlier issues. So it's like a retcon...within 4 issues?
That said, it's enjoyable! Very fun, a quick read. And if what you're coming here for is "more ponies," then that's what you're getting. They're cute, they're brave, they're loyal. I'll definitely be keeping an eye out for volume 2!