Even though there are only 20-30 players online, maybe the Grand Exchange would bring new players? I've seen other servers with it and they usually have 100+ online at any given time.
As for the price basis, the Grand Exchange could act as this. Although everything would have to be marked WAY up because of all of the cash in game right now, it would be nice to have some sort of a cash economy. Being able to have more than one max stack of gp would help a lot in my opinion, since most people already have max cash. You could either do this or take a large portion of gp from each player.
Another thing that would help is to not make it so easy to get like nogoodnms said, make people skill for cash or something else that actually takes some effort. In the long run i think this would be good for worldscape.
As for the price basis, the Grand Exchange could act as this. Although everything would have to be marked WAY up because of all of the cash in game right now, it would be nice to have some sort of a cash economy. Being able to have more than one max stack of gp would help a lot in my opinion, since most people already have max cash. You could either do this or take a large portion of gp from each player.
Another thing that would help is to not make it so easy to get like nogoodnms said, make people skill for cash or something else that actually takes some effort. In the long run i think this would be good for worldscape.