Regarding the event. There are some mistakes.
The text in event description on website says: "The [Event] Mini Treasure Map can be purchased from NPC merchants for Kinah.", but this seems to be wrong. You can sell it, not buy it.
Also, the description you get on Mini Treasure Map on Elyos side is telling you to talk to NPC in pandaemonium. (In case you didn't know, it's not possible).
Both Elyos and Asmodian "Mini Treasure Map" ([item: 182006782] and [item: 182006783]) state: "or take it to Gogohwas to exchange".
Elyos archaeologist is "Gogoas" not "Gogohwas".
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As for feedback. In my opinion "unknown" map parts, should sell for 50,000 at NPC. So you can get some money if you decide not to pay the overpriced 300.000 kinah to gamble. That means only 100k per DP S run (which costs 5 scales + 175k to enter), or 100k from killing 7 asmo/ely. Might promote PvP a little more.