Hey there Brujo,
The event was not held unfair, it was made a short time yes but fear not as we will run these events longer in the future.
The quantity dropped was not poor, 3 full inventories were dropped all around the soccer stadium that included skill enhancement stones, crones and even a stack of 50 million crones randomly dropped. Whereas previously we dropped only mock duck pouches. In future events I'll make sure to look into who is causing constant turmoil and remove him/her from the event.
The winner of the costumes is only determined by he who is shown on my hit list or he who I can verify did a last hit before I was dead. I'll make sure to modify rules here and there and post news of updated events very soon. As the calendar will be redesigned very soon. I'll make sure to spread the drops even more and increase the quantity of drop rewards however they won't be as great as previously made.
Thanks for your feedback! I'll make sure to improve some of the areas you noted!