The B744 localizer antenna is located in the radome with the weather radar so the whole aircraft is downwind of the centreline in a crosswind
Are you sure? I seem to remember my manual says that the antenna is in the tail and switches to one on the gear when the gear is selected down. It specifically cautions against selecting the gear down immediately prior to localiser capture to prevent the autopilot missing the intercept due to switching between the antennas.