I don't think it's a good idea to change our name yet. Looking at our statistics, we're pitiful. Our traffic isn't great, and it doesn't look like it's going to explode any time soon. Old "accepted" answers that are flatly wrote are still accepted, and extremely poor answers still comprise a large portion of total answers. I think before anything changes officially, we need to see if this is the form we want it in. Is adding folklore alone enough? What really holds it together? Why is religion specifically excluded? What about the culture that surrounds myths? History that surrounds myths?
Now that Mythology has been live for almost a year, it seems best to me that something more than a simple renaming needs to be done, and maybe that something would like another renaming in the future, which, if I understand Pops correctly, would be impossible after this one. Shouldn't we then wait and try things out until something good starts happening?
C. M. Weimer's answer about the site scope.
Even though no one on this site has successfully defined mythology, we've been about much more than mythology (however you define it) for quite some time. We have questions about religious events, we have questions about board games, and we have questions about religious attire.
These questions about Christmas seem to be positively received; for three out of four questions, no one has voted to close them and only one person has downvoted them. That would seem to indicate that a large portion of our userbase finds them helpful and/or ontopic. (It's also possible that the votes are coming from people who don't participate on the site, but I would like to think if that happened to a low quality question people who do participate on our site would downvote and vote to close).
Given the fact that, no matter how you define mythology (which we've never really done in a conclusive manner), our site scope definitely extends beyond it, I don't think it makes sense to close these questions for not being "mythology" when a large portion of our site seems to think that they are on-topic.
We have two options here. We can (1) spend some time rethinking our scope, our site's name, and our site's purpose, and attempt to come up with a clear definition to the question of our scope. Or (2) we can push that conversation to a later day, but in that case it doesn't make sense to close questions for not being about "mythology" when we can't even explain what "mythology" is.