Its a bad event and a waste of potential unless you are going to put the instance buffs in place so players can go to stage 15 for more than 50-80 instance points a run.
Having said that the rewards are also really bad I wouldnt wag my tail for those items. The one and only item that ALL PLAYERS WOULD DO THIS EVENT FOR is not there.
Radiant Ancient Skill Enhancement Stone (30 Days)
Radiant Skill Enhancement Stone
And its funny how you make an instance dungeon event but you neglect to make a sale/special on scroll of challenge or wrath of ohn. I know I am using you as a GM tom foolery punching bag but really is it so hard to do a little research?