MapleLegends' future economy solution

The meso generation in this game at the moment is at its peak, this will lead to the economy of the server crashing down later on in the future.
At the moment, meso is being gained while barely any meso is leaving the game.
The ways mesos are being destroyed in the game at the moment are:
1. Taxi/Ships(Transportation).
2. Potions.
3. Mount quests.
4. Weapons/Armory(If any1 even buys these).

The ways mesos are generated into the game:
1. Killing any mob.
2. Some of the quests.

As every other game with a similiar currency system, this server will be going into a phase of gachapon items being the real currency of the game (White scrolls/Chaos scrolls/30% Scrolls)
if we want to avoid meso losing its value as currency, I suggest we make a way to destroy meso( meso sink), so more meso leaves the game so it can at least try to be equal to the amount of meso being generated.

Some suggestions that come to mind is:

1.NX Items for mesos, this will give no advantage to any1 since its purely asthetic,
and that way meso have some kind of way to leave the game instead of being kept in character storage, although, they will have to be untradeable and expiring as well .

2.AP resets for mesos(I don't support it that much, but it is a meso sink),
Untradeable ap resets will keep meso leaving the game(HUGE demand)
so the generated meso might not keep up.

3.Random Box in the cash shop that costs a certain amount of meso,
that will give a random nx item (with a chance for a rare item that does not exist in CS).

I'd like to see some more suggestions for a way to have meso leave the game because as it is, meso is just not gonna be a real currency later on for the server.
don't see the current situation, but how it will turn later, some people told me before
the server is alright as it is right now.
That might be true, but it won't make the situation in the future less of a problem
better avoid it sooner than later