Suggestions from a Economist's stand point

Guys did you understand i am coming from an economist prospective? So it fluctuates on people hence player amount in game. I know we need more players I was just listing a few things see if anyone has more ideas or inputs.

and for number 9. It is to go beyond what Runescape ever could go. You make the players reliant on players not players reliant on shops. So if someone had lobster for sale at 75ea and shop has them for sale for 80ea the player would probably just get from shop cause it is quicker or they don't feel like finding any food. This is just a suggestion though cause it requires more players.

A in game economy makes a game worth playing the more you make and the more fun it is when someone dies to you and you get there valuable items.

At the moment another problem is rune items are very expensive. Causing people not to pk very much with them on.