Game is good. Been playing for 3 years already (Since the first day of the Game.) But I'll give 4 Stars.
Same as the others, please do optimizations especially on GvG and PvP aspects. If possible, please create more opportunities for Non-Casher Players to be sustainable in the Game. Close the gap between the Casher and Non-Casher Players but not entirely wipe it.
Also, please increase the Entry Limit for Dungeon Raids such as Oracle and Thanatos Tower. This will entice more new players to play the since they will feel assured of the fact that a lot of veteran players can help them and they can all be helped.