I KNOW !!!!! We Can Also Ranking in this (Something like Player's Name,Their Kill And Finish Time ). If necessary We Can Add The "Combination of Material" Into This For Example: If you want to do Mansion Raid Boss you have to "Sacrifice" 4 Different PVE Items Which you Got from Mansion Quests. This Way Will Balance the "Sacrifice Mode Which Few Player using nowadays, and Other Quest Will Be In Playing More Often, Also Player will have great motivation about Raid Boss (Ranking)(Booster Chance of Mythical) . Lastly Whoever is top 5 in Ranking (Raid Boss) will have Big Reward Every Month From Developer And Ranking will been Reseted Every Month too. Quest System Will Be More Balancing !!! . Sorry My English Bad Tee Hee