What2doNexon

What they should do is add something where if an item is past it's theoretical limit, it gets removed from the inventory. Yes, this would require a lot of effort coding all that, but at least the items would be removed. Every item should be put under the assumption that it's stats can be raised up to 15 times with scrolls, with the addition of 7 stats per scroll, and up to 15 Equip Enhancements. Yes, while doing all this legititmatly seems impossible, there needs to be some buffer for the legit items.

Why go by stats instead of by slots?
Any item that has more scrolled slots + unused slots than it can (per the item prototype in the character.wz file) will ban the account it's on.
And 15 enhances... yeah, whatever.
Of course this won't catch the items that had their enhancement history wiped by the world transfer bug. Those will have to be individually searched for by other means.