Thank you for the feedback. This is an important and valid concern. Similar concerns were raised on the discussion thread over at Metaculus, and we've replied with some thoughts there. It's worth mentioning that I don't think we should move forward with anything until we've carefully considered the consequences – probably using forecasting to help with this – and gotten feedback from several disinterested parties.
I've thought a little more, at a very high level, about how an event like this might be designed in order to be beneficial overall, and written the idea up here.