Hello, I have previously played a server where you can get questing scrolls that give rewards for completing them. I have included an example from one I had. There is customisation as far as I know as to what you have to do, and what rewards you get per tier. Obviously you could add a Castian tier which would be very hard to complete but offers Castian tier rewards. It would increase playtime I feel too given people would be wanting to complete these scrolls. Some of them include having to walk a certain distance, sail a certain distance etc. Plus it adds mini goals. Some can be made as basic as 'Axe 10 trees, eat 2 apples, mine 50 cobblestone' and then you may get a basic reward like 32 glowstone etc.