Disclaimer: The following was originally an "answer" to another meta question: determining our scope. I recently realized that I never actually got around to ask this as a separate question, and never really got any replies to it. The mentioned examples are a bit out of date, but I guess they still convey the point.
Seeing that fandom seems to be on-topic, how do we consider speculative questions? For instance with the upcoming European championships, questions based on opinions are likely to come, but considering that the rest of StackExchange is based on clearly answerable questions I am not sure if it would be off-topic to ask a question like "How do you think the generation shift in France will effect their chances in the Euro 2012?" or "How will Spain cope with not having David Villa?"
For further reference, please check the suggestion/proposal in my answer to another meta question; "original answer or not".