those numbers are a bit exagerated but youre very right. steps to take:
next campaign...
nerf the rush
lower drop rates
more items. the more items there are the more people want to get them. make them all very balanced, so no one is a lot better than the other. Right now, weapons are very unbalanced as there are 1 or 2 that everyone uses because they are simply better than the other ones. If they have all the items balanced then people will buy more stuff which raises prices and it will create more variety in what people use rather than only seeing people with gurgox hammers and laser talon, and none of the other cool ao3 weapons.