I accidentally killed someone in town, and then I lost 240% exp. I went from 98% to -142%, for only 20 NK. I had someone anthem me because I though no -exp on this server like in beta. If you want to add back -exp fine, but 120% per anthem seems a bit harsh for an accident. You should make PK mode and Battle mode different keys if you're going to give such a huge pk penalty.
Getting my exp back would be nice too. Same char name in-game.