I recommend going with a description on the back. I've always thought that these covers, even though they're unofficial, should still attempt to "sell" what's inside. I'd like to think that a novice Star Wars fan could pick up the case, and understand what this was by reading the back of the cover. So when someone comes to my house and notices all my Star Wars DVDs, they can read the cases to understand how each one is different.
That's just my take.