Maybe you should try the Rappelz Hardcore 7.2 server its very well populated and there are some changes made to the classes, you can play alone till level 70 i would say then you have to either get your equip better or get a Party so you can level with other people together. If you want money you have to Farm Elite Mobs to get some Old equip it feels just like in the Old times. I really suggest you to join the server and try it out a bit.
Besides There are Regular Dps on the server with up to 8 People in them which i find very rare in these days, were everyone is lvl 180 after 1 day on the other servers.