I don't think there should be a leaver penalty, because a system like that could be easily abused. IE Throwing attacks at people to keep people in a game or force them to take a death and a penalty. Don't get me wrong, I think leaving just before someone kills you is one of the weakest moves in pvp, but it's something we're just going to have to deal with.

Something that annoys me is what actually counts as being in "combat" now...like using any kind of ability or attack puts you in combat. It seems minor, but it's really frustrating when I get a death for leaving because I accidentally hit the attack button before hitting the X. Attacks and skills that don't connect with anything shouldn't put you in combat