well these were already former suggestions, but while I'm here
1) low levels should not get full exp from any level above like 219+ because honestly it is possible to do it, but there's no way a low level is going to grind those levels unless the reason is that they are leeching.
2) new players don't receive much and this leads to leeching.
3) when someone gets banned, the prompt at the log-in screen should refer them to the main website and we should allow them to appeal in a special thread saying they have like 3 days to do so until it's irreversible.
4) aside from 258, the fact that every other level except 258 and 172 are basically 100% useless
5) story mode is useless
6) survival mode gets it's 5 minutes in the sun and then it's useless forever until someone makes a new account or is hacking.
7) that weird korean gibberish channel crashing thing
8 ) the game skin -> users should be able to submit their own and then there should be an interface to change it for normal users who are not good at modding.
9) aside from upper tier armors being 0 gigas, you guys should scale the prices of shopping all armors up a little bit since the average player is poor and only a few people who have basically quit control the economy.
10) sunday 3x is a flop, should move that to saturday or maybe even schedule random days during the week for dedicated players.
the list goes on
