Well I have an idea about Isen and Jainus as an all. How about separate P2W upgrds/boss drops to just one side of the gaming community and then the players that like crafting and easy "F2P"?(Isen style) game play gearing to one side then balance it in a way that you can merge Isen with Jainus without making anyone angry. What I mean Crafting Gear is crafting gear like Isens Chimera Accs/weaps/armor and Upgrd weaps/accs forged armors are one side meaning you have to choose the gear you want but cant have both. Last time I checked Isen the gear was as or more OP than Jainus Upgrds and stat inflation (correct me if I'm wrong) That way rather than having 2 servers with 2 different playing styles(if it can be called like that) bring them both to a happy harmony in one server full of players and merge both worlds positive sides(with Jainus ench rates ofc).
Example
Chim accs/armor and Upgrd weap or Chim armor/weap upgrd accs you cant do this only Chim Armor/accs/weap or Upgrd Accs/weap forged armor.