''
http://www.herocraftonline.com/main/forums/RP/'' and ''
http://www.herocraftonline.com/main/forums/lore/''..
..are both very rarely used. If used at all. Yes the ''Lore'' bit is used, but more as a space to write your own fiction than to actually join in with the real HC lore. Even if there is HC lore within that, it is of very little importance to the server gameplay. My point, with reference to RS, is that the lore plays a much greater role in the game. Quests come as a part of this.
The only ''Roleplay'' (through communication) aspect of the game I can think of is standing outside of a town shouting ''LO undefeated'' or ''GG TC''.
As for trade, that isn't much to be proud of. Trading doesn't mean much. People sit there with over 20,000c in their banks and have nothing to do with it. Not only is there nothing to buy, but there is no reason to buy anything. Sure they could pay for town upgrades, but there will still be money left over. The trade district, last time I checked, had very few shops. RS, on the other hand, pretty much always has things available for you to buy, through the GE.
On the topic of the trade district, why not make it so that ''Collect-a-thon'' quests were placed down there? It would encourage people to build shops selling the items you need, and that may influence people to make shops selling other items.