In the event, only hope which I had is Ethereal fountain to focus on live server. I understand the rebalancing purpose because level 2 40% defense to defending army in GE is irritating developer eyes and mind, which most of the beta players loved it despite of 4x2 size building. But they forgot the fact, 4x2 time limit building no player will wishes to use that building.
Few days left for the event, and now forcing this change is unacceptable. If this change given in beta from the day one of the event, all of us might have suggested to remove the time limit on this building since that will be event's best choice building to make the players play the minigame repeatedly (though it was very much annoying). Just because of trailside smithey in silver league, developers thought like they are free to destroy the little satisfaction from other buildings introduced in the event.
My suggestion is, don't bring the new boost items in this event and let them come in a separate event. Revoke this time limit change and reduce the power boost values on level 2 building and keep them as permanant buildings only.
As players, we are trying to bring some motivation to minigame and developers constantly helping to demotivate everyone with their logic change. I kindly request all community managers to fight or argue with developers to make this change.