Most of rooms are inactive even they got prizes or monthly events. This problem won't be solved unless, you make public rooms with limit capacity such as EU public with 500 no. of players.. However, this limit is not restricted for DM or GM members. They can enter even the room is full.
The benefits of these suggestions lead to; Goldmember ship will be valuable and most of players will buy it, that will make a good profit for RGC. Second thing is other rooms will be active and players can enjoy with monthly events and the multiplicity of the client.