提案/Suggestion
Add items in the shop that can be bought with Zenny, not just limit the in-game purchases to Gems or real-life money.
現状/Current Status
Pretty sure some Hunters might have a lot of Zenny in their wallets, but the only way to spend it is by forging/upgrading equipment.
Not only there could be more ways to spend Zenny, as suggested above, but also, the shop actually shows how much Zenny you have, but you never really spend it there.
Besides, I don’t think this idea would make the game unbalanced because… it’s a Monster Hunter game. No one’s competing against each other, right?