I'm just writing ideas, even the most complex ones could be coded by Ncsoft in my opinion (opening tia eye in a certain timeframe does not sound that hard). From my understeanding they were open for suggestions during the meet & greet with GF, so they may like the idea and use it for their own servers as well It does not have to be one of mine, but something creative!
Point is try to come up with new ideas and polish the current event with better distribution of rewards among the tiers
Please don't get me wrong, I like your ideas. Keep bringing them up, I'll make sure they get to the right person.