Welcome to the server however from you comments you kind of haven't been around that long enough since several of the thing you have mentioned are already in effect, I'll reply quickly to each of the points made.
The pawnshop is designed to keep items stability in a few ways;
- Items have a minimum value, rather than for example whips being 500k each.
- It helps players generate coins though doing content, this is opposed to where a Coin pouch would drop several Mil of gp.
- It removed excess items from the gave over a time period, as will be touched on below.
- plus more....
- The Pawnshop is emptied regularly, almost given each week without fail, sometimes 10 days depending on the need for it.
- If you could explain your Abyssal whip point in more detail, at the moment the only accounts to have Free Whips are normal accounts, who are given one for completing the Easy Training Day Dairies, which is obviously a 1 time thing.
- Construction just wont be added, there are far to many issues surrounding it for it to be implemented. This also would not really have any impact on the financial aspect of the game overall.
- By world bosses I'm assuming you mean the Jad event boss? or the Wild HP? Yeah I get that these events at the moment are static, we are looking at some form of time rotation around some of the events. Adding more with the current amount of events [remember this is not currenting including any holiday or special events] would just be too much.