Fixing MapleStory

Doesn't really make sense, people would just cube on mule accounts. Different cubes for each tier of potential though does make sense since you only get 2-3% from level 30 equips where you'd get 6-9% on higher stuff.

Fixing the exchange rate just needs some meso sinks that rich players will use. If you put anything actually consumable on sale for mesos (cubes, WS, MEEs, etc.) then the rate would drop soon enough.

You do have to deal with the botting/hacking problem before any ingame achievement has value though. NX can preserve its value only because botters can't generate it.

That was my intial thought too, but I feel as though the lower players should have those oppurtunities as well, that are reasonable to their means. My suggestion really was a general idea, there are plenty of other necessary path's to take and it certainly isn't the only necessary change.