I love the people who sit on their high horse and give no statistics, your Island is perfectly balanced to what ? It maybe your game style is fully for-filled by doing a couple of stealing from the rich or you could possibly do a fairytale in a day, you could do nothing all week and 1 adventure at the weekend. Please consider that many people filled their islands long before all the big buildings were released and are not about to tear down level 5 buildings ( with not much in return ) just to fit this new stuff in. So in some cases people do need the extra space.
I wouldn't advocate postponing something like an event but it was on test some while ago then removed, an update giving some details on a likely implementation date or an alternative strategy might be nice.