>>PLEASE READ ME.<<
We have enough investigation plans to fill up our entire lifetimes. That isn't hyperbole. We also get a few dozen requests a month, and each requires a fair amount of time and attention. The majority of them will never get investigated, because time is a tricky mistress. In short, we truly don't need any suggestions.
That said, if you are just dying to tell us about something anyway, here's a handy form for you to let us know. If it's a topic currently in the news, or a well-known religion, rest assured that we are aware of it and already have it on our list. We really read every message, so if you don't hear back, we still read and considered your idea!