If you want to be unique, don't put craft in it. Do something like "Fallen Universe", or "Worlds of Desertion".
It depends on what you are doing, of course. If it's a prison server, it should sound like some sort of business jargon for a jail, like Smith Detainment Services Inc.\
If it's a RP server, you can come up with a name.
There's a lot of Minecraft servers out there. What makes yours special? Name it something related to that.
Edit: OH SHOOT I REPLIED TO A HUGE NECROPOST.
This is probably not still at all useful, because the OP was a year ago. Either way, orestis7000,
that's called a very big bump, and it's usually frowned upon if you don't have a big reason to do so. Make sure to check the post dates.