Achievement system - no current achievement and the previous one was so bad the prizes weren't worth the players time....the old achievement system offered players Fox lvl 1 pets, 200% growth seals, lucky stones and 1000x pet foods why was this completely phased out when this is Isen server which advertises "great rewards".
Badge Mall - just recently 200 stat armor stones were added to IM, but now the badge mall didn't get any updates to it? pretty one sided. what should have been done was add 150 stat spirit stones in-game for around 9x-14x badges each which in turn will give people a reason to go Power Arena.
no reinforcement/forging events
if these things aren't even at least looked into the server population will continue to drop