A new quest system

Quest system: a list of challenges/quest based on challenge of progression, there will be a gui in which you can pay (an amount of) money to get tier 1,2,3,4,5 random quest voucher. The higher the quest tier the better the odds of getting better rarity of quest or even easy quest. From this the people would be able to get points for how much quest they did. And there will be levels on which there will be an amount of points the player needs to get the reward, further on there will be better rewards but it will get harder to get more levels. People can even sell the points they get from the quest they did increasing the economic variety.