MTS temporarily offline

Far as I know, the exploits don't require MTS...
This must be a real hidden NX exploit, hence why the reacted (somewhat) fast.

There's no NX exploit that I've heard of, but instead, MTS was used to crash the channels (yes, as strange as this may sound and no, I'm not confusing this with item duping, which they also use MTS for). This subsequently leads to duping and other follow up problems.

Remove MTS and implement cash trade room is clearly the best option for stopping the abuse of rollback FUD. They can either flush it of it's contents or give users a weeks notice to remove anything they have inside. MTS isn't even that useful anymore because you can't sell potentialed items and the tax they implemented is too ridiculous for people to bother with.

Nexon won't get rid of MTS because it's profitable. Other than that, MTS is useful for purchasing scrolls, jewels, skill books, etc. Buying equips on MTS is a stupid idea in my opinion anyway so not having potential or enhanced items on there isn't a big loss.