This idea has potential however I don't like the way it was presented.
Here is another idea that goes along with it.
Being able to buy a lucky box. It's a box just like the ones you have but when you grab it, it displays a message "lucky" or "unlucky". Of even a box and behind it is an enclosed space. You grab it and if you're lucky you don't go in the space. If you lose you go in it.
What I am saying is, you should be able to buy furni to make your own events or whatever, but not buy the whole event building