After voting to leave open a half-dozen Santa questions and considering my previous question about anatomically correct questions, I'd like to propose the following.
At this time I am aware of two kinds of "tradition" questions: Santa questions and "anatomically correct" questions. Yes, they're all off-topic for a variety of reasons, but they're also popular and fun. In other words, they're exceptions.
Rather than create lengthy meta descriptions for either of these two questions — and in an effort to keep people from voting to close many-year-old questions that are obviously in our tradition bracket — I would like to propose the creation of the following NOTICE for "anatomically correct" questions. This notice would be attached to all such questions past, present, and future to help people understand that they're a delightful exception to our normal rules. (See linked question for a proposed Santa notice.)
Anatomically Correct Creatures Tradition: Questions asking after the plausibility of anatomically correct mythological or fantastic creatures are a tradition at Worldbuilding.SE. Leniency is granted concerning our on-/off-topic rules. The OP should endevor to include as much information as possible about the creature in question to avoid the question being downvoted for poor research.
I'm pretty sure I don't have privileges to create and attach these notices. They're the same programmatic object as the hard-science notice. This means I'm going to need the help of someone great and powerful to help me get this done. Thanks!