I think we need to switch to questions that must be answered with "yes" or "no". Asking for the composers birth date, key signatures, etc. is just giving it away. It's almost like asking "What's the opus number".
I agree to a point.
At the same time, if all the answer you get is yes or no, then it becomes sort of boring.
I like when cryptical statememts like ayahav's "I was born before my sibling..." are made.
So what about this new rule: You can only ask yes or no questions, but any poster has the right to ask from the riddler a cryptical statement about the work (cryptical statements being limited to one per poster, that is, once you requested yours, you can request no more).