Currently the only two money sinks in the game are Id kits and salavage kits and niether of them really attract that much money.
People will say AR/Runes are a money sink but they aren't because really a player can carry a maxium of like two suits or so because of the limited number of slots.
What I would suggest is either HP/MP restore potion Or HP/MP tempory bonus potions ( say 30 seconds maybe with a 60 delay between uses).
These potions should say cost 100 gold and be a bonus or restoration of 10 points. Not much but it helps.
This idea can be further expand by using crafters to create more powerful potions. Say by combining 10 potions and 100 gold to make a potion that boost by 20 points instead of 10 points.
If something doesn't happen soon the inflation will become a joke.
Its either this or well NCSoft/Arenanet should make everything free.
b



:joke: