30 to me seems ridiculously high. What kind of idiot makes it to level 25 and still is so incompetent that you can't give him any death penalties?
If it has to be raised, raise it to level 15. That should be enough time for anyone to have figured out how to play the game.
Once this change goes through, we should see an amusing consequence. Level 30 players will be logging onto these forums and saying, "Waaah, no fair, I died and I lost 1000 exp! We shouldn't have to lose exp when we die!"