Our character profile allows us to view several statistics, I think a good one to track would be for us to see how many killing blows we landed on characters and also how many assists (recently in combat with character that died, but did not get the killing blow). Have these split into developed and underdeveloped categories just like with skulls.
Grave Epitaphs; currently only the name of deceased appears. Add cause of death to graves. What killed player, who killed player. "Died from Bum Burn by Self" or "Died by Cleave from Soandso." During the most recent livestream there was hesitancy over how best to implement/word this change. However it is implemented will be better than not having it implemented.