This is for the developers. The change of the combat points recharge time has led to the contest "Eternal Rivalry" being redundant as no one actually misses the grunt fight. So, if you are at a higher level, you are more likely to win or if you use kobans to recharge your combat bar. Hence, you are actually losing more kobans than you earn. Also, the contest that require gaining xp needs to change as well as you can only gain xp from daily activities if you have completed the story quest and any xp from PvP battles are almost negligible.