Gareths Sugestions

More custom items eg. bronze\iron etc whips
Custom rares
More bosses (Dung bosses etc)
New Donorzone with custom shops and npc's
New staffzone/staff meeting area
Harder Skills
New home maybe in Draynor?
Better loot from bosses (but make drop rates alot higher)
Maybe remove elvs? They ruin eco imo.
Dicing? Personally I enjoy dicing but it causes to many problems.
GWD is needed!
Nex
Custom pking armour?
New areas such as slayer dung in relleka?
Skilling makes a decent profit
Tutorial for new players
Random events

I love this

Only 3 starter sets per IP
PvP ranking system? Not sure how this would work
Downloadable client
Working quests
Events such as Christmas\Halloween
Tormented demons
Custom Monsters for slayer
Commands like ::commands/::rules/::da(donor area)/::sa(staffarea)
Maybe a map of some sort where you type what monster you looking and it tells you where it is

Donor items:
Customs and fun items such as mentioned before coloured whips / rubber chicken etc
PkP shops selling upgraded items such as whips
Staff only items like pring +stat items, make sure that if a normal player recieves it somehow eg through hacking they cant equipt.
Items like Dragon staff/wolf staff etc should be donor

Didn't know about that thanks