Sounds like a high-risk strategy where some people might enjoy it but the ones who hate it are really going to hate it. Would not risk that in a Yuletide fic without strong indications in their prompts that they would be up for it, TBH. (Do they say they like twist endings, identity porn and outsider POVs, etc.? You're probably good! Do they just talk about how much they love to see their blorbos interact? I would not.)