There are modifications long asked by the general RO community made to the class skills, and even new skills to make the classes balanced, it keeps the game fresh and makes former useless skills useful. The community is so friendly, almost every single player is willing to help you. There's only one ADM/GM, so it's impossible to have server corruption. The new equipments are adjusted to be balanced and equippable by the classic jobs.The only con i think of is the utter dominance of the Wand Clan