On the other hand, I doubt that I will be following them to make a big meal, because I live alone and this somehow deflates the festivity of a family dinner.
But I think I am the exception, and I don't mind speaking with other people about their holiday culinary planning.
So I would support the idea, I'm OK with either Christmas or general holiday.
Maybe we could talk about Christmas food traditions in chat, with everybody presenting a regional tradition, and then start the blog with a collective post where the people who chatted explain the tradition the others liked the most.
Although, I don't even know if we will be ready with the blog planning before Chrstmas, and afterwards it doesn't make as much sense.