What if the Christmas episode is basically just Clara and The Doctor being cutie pies and doing loads of Christmassy things like swapping gifts and making the dinner together. And instead of like some crazy epic death scene, The Doctor just like fucking dies after a Christmas tree falls on him or some shit because let’s be honest, that’s not even that far fetched when it comes to Eleven.
Series 8 scenario #1: Twelve and Clara meet one of the Doctor’s past companions. Twelve tries to imply that he recently regenerated under heroic circumstances while Clara’s standing behind his back shaking her head and mouthing, "No."
Series 8 scenario #2: Twelve and Clara meet Mickey and Martha. Twelve has no compunction telling Mickey he got killed by a Christmas tree and Mickey winces sympathetically and only ribs the Doctor a little while Clara and Martha are like “what even.”